21207173820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1\times {\mathrm{3257}}^1$

素因数の和:3732

約数の個数: 192

約数和(自身を含む): 69884881920

約数和(自身を除く): 48677708100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 37, 42, 60, 70, 74, 84, 105, 111, 140, 148, 185, 210, 222, 259, 370, 419, 420, 444, 518, 555, 740, 777, 838, 1036, 1110, 1257, 1295, 1554, 1676, 2095, 2220, 2514, 2590, 2933, 3108, 3257, 3885, 4190, 5028, 5180, 5866, 6285, 6514, 7770, 8380, 8799, 9771, 11732, 12570, 13028, 14665, 15503, 15540, 16285, 17598, 19542, 22799, 25140, 29330, 31006, 32570, 35196, 39084, 43995, 45598, 46509, 48855, 58660, 62012, 65140, 68397, 77515, 87990, 91196, 93018, 97710, 108521, 113995, 120509, 136794, 155030, 175980, 186036, 195420, 217042, 227990, 232545, 241018, 273588, 310060, 325563, 341985, 361527, 434084, 455980, 465090, 482036, 542605, 602545, 651126, 683970, 723054, 843563, 930180, 1085210, 1205090, 1302252, 1364683, 1367940, 1446108, 1627815, 1687126, 1807635, 2170420, 2410180, 2530689, 2729366, 3255630, 3374252, 3615270, 4094049, 4217815, 5061378, 5458732, 6511260, 6823415, 7230540, 8188098, 8435630, 9552781, 10122756, 12653445, 13646830, 16376196, 16871260, 19105562, 20470245, 25306890, 27293660, 28658343, 38211124, 40940490, 47763905, 50493271, 50613780, 57316686, 81880980, 95527810, 100986542, 114633372, 143291715, 151479813, 191055620, 201973084, 252466355, 286583430, 302959626, 353452897, 504932710, 573166860, 605919252, 706905794, 757399065, 1009865420, 1060358691, 1413811588, 1514798130, 1767264485, 2120717382, 3029596260, 3534528970, 4241434764, 5301793455, 7069057940, 10603586910, 21207173820]

約数ペア:

[(1, 21207173820), (2, 10603586910), (3, 7069057940), (4, 5301793455), (5, 4241434764), (6, 3534528970), (7, 3029596260), (10, 2120717382), (12, 1767264485), (14, 1514798130), (15, 1413811588), (20, 1060358691), (21, 1009865420), (28, 757399065), (30, 706905794), (35, 605919252), (37, 573166860), (42, 504932710), (60, 353452897), (70, 302959626), (74, 286583430), (84, 252466355), (105, 201973084), (111, 191055620), (140, 151479813), (148, 143291715), (185, 114633372), (210, 100986542), (222, 95527810), (259, 81880980), (370, 57316686), (419, 50613780), (420, 50493271), (444, 47763905), (518, 40940490), (555, 38211124), (740, 28658343), (777, 27293660), (838, 25306890), (1036, 20470245), (1110, 19105562), (1257, 16871260), (1295, 16376196), (1554, 13646830), (1676, 12653445), (2095, 10122756), (2220, 9552781), (2514, 8435630), (2590, 8188098), (2933, 7230540), (3108, 6823415), (3257, 6511260), (3885, 5458732), (4190, 5061378), (5028, 4217815), (5180, 4094049), (5866, 3615270), (6285, 3374252), (6514, 3255630), (7770, 2729366), (8380, 2530689), (8799, 2410180), (9771, 2170420), (11732, 1807635), (12570, 1687126), (13028, 1627815), (14665, 1446108), (15503, 1367940), (15540, 1364683), (16285, 1302252), (17598, 1205090), (19542, 1085210), (22799, 930180), (25140, 843563), (29330, 723054), (31006, 683970), (32570, 651126), (35196, 602545), (39084, 542605), (43995, 482036), (45598, 465090), (46509, 455980), (48855, 434084), (58660, 361527), (62012, 341985), (65140, 325563), (68397, 310060), (77515, 273588), (87990, 241018), (91196, 232545), (93018, 227990), (97710, 217042), (108521, 195420), (113995, 186036), (120509, 175980), (136794, 155030)]