21400470

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:116

約数の個数: 192

約数和(自身を含む): 71677440

約数和(自身を除く): 50276970

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 42, 45, 54, 63, 65, 67, 70, 78, 90, 91, 105, 117, 126, 130, 134, 135, 169, 182, 189, 195, 201, 210, 234, 270, 273, 315, 335, 338, 351, 378, 390, 402, 455, 469, 507, 546, 585, 603, 630, 670, 702, 819, 845, 871, 910, 938, 945, 1005, 1014, 1170, 1183, 1206, 1365, 1407, 1521, 1638, 1690, 1742, 1755, 1809, 1890, 2010, 2345, 2366, 2457, 2535, 2613, 2730, 2814, 3015, 3042, 3510, 3549, 3618, 4095, 4221, 4355, 4563, 4690, 4914, 5070, 5226, 5915, 6030, 6097, 7035, 7098, 7605, 7839, 8190, 8442, 8710, 9045, 9126, 10647, 11323, 11830, 12194, 12285, 12663, 13065, 14070, 15210, 15678, 17745, 18090, 18291, 21105, 21294, 22646, 22815, 23517, 24570, 25326, 26130, 30485, 31941, 33969, 35490, 36582, 39195, 42210, 45630, 47034, 53235, 54873, 56615, 60970, 63315, 63882, 67938, 78390, 79261, 91455, 101907, 106470, 109746, 113230, 117585, 126630, 158522, 159705, 164619, 169845, 182910, 203814, 235170, 237783, 274365, 305721, 319410, 329238, 339690, 396305, 475566, 509535, 548730, 611442, 713349, 792610, 823095, 1019070, 1188915, 1426698, 1528605, 1646190, 2140047, 2377830, 3057210, 3566745, 4280094, 7133490, 10700235, 21400470]

約数ペア:

[(1, 21400470), (2, 10700235), (3, 7133490), (5, 4280094), (6, 3566745), (7, 3057210), (9, 2377830), (10, 2140047), (13, 1646190), (14, 1528605), (15, 1426698), (18, 1188915), (21, 1019070), (26, 823095), (27, 792610), (30, 713349), (35, 611442), (39, 548730), (42, 509535), (45, 475566), (54, 396305), (63, 339690), (65, 329238), (67, 319410), (70, 305721), (78, 274365), (90, 237783), (91, 235170), (105, 203814), (117, 182910), (126, 169845), (130, 164619), (134, 159705), (135, 158522), (169, 126630), (182, 117585), (189, 113230), (195, 109746), (201, 106470), (210, 101907), (234, 91455), (270, 79261), (273, 78390), (315, 67938), (335, 63882), (338, 63315), (351, 60970), (378, 56615), (390, 54873), (402, 53235), (455, 47034), (469, 45630), (507, 42210), (546, 39195), (585, 36582), (603, 35490), (630, 33969), (670, 31941), (702, 30485), (819, 26130), (845, 25326), (871, 24570), (910, 23517), (938, 22815), (945, 22646), (1005, 21294), (1014, 21105), (1170, 18291), (1183, 18090), (1206, 17745), (1365, 15678), (1407, 15210), (1521, 14070), (1638, 13065), (1690, 12663), (1742, 12285), (1755, 12194), (1809, 11830), (1890, 11323), (2010, 10647), (2345, 9126), (2366, 9045), (2457, 8710), (2535, 8442), (2613, 8190), (2730, 7839), (2814, 7605), (3015, 7098), (3042, 7035), (3510, 6097), (3549, 6030), (3618, 5915), (4095, 5226), (4221, 5070), (4355, 4914), (4563, 4690)]