21298620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:212

約数の個数: 192

約数和(自身を含む): 76446720

約数和(自身を除く): 55148100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 19, 20, 21, 28, 30, 34, 35, 38, 42, 51, 57, 60, 68, 70, 76, 84, 85, 95, 102, 105, 114, 119, 133, 140, 157, 170, 190, 204, 210, 228, 238, 255, 266, 285, 314, 323, 340, 357, 380, 399, 420, 471, 476, 510, 532, 570, 595, 628, 646, 665, 714, 785, 798, 942, 969, 1020, 1099, 1140, 1190, 1292, 1330, 1428, 1570, 1596, 1615, 1785, 1884, 1938, 1995, 2198, 2261, 2355, 2380, 2660, 2669, 2983, 3140, 3230, 3297, 3570, 3876, 3990, 4396, 4522, 4710, 4845, 5338, 5495, 5966, 6460, 6594, 6783, 7140, 7980, 8007, 8949, 9044, 9420, 9690, 10676, 10990, 11305, 11932, 13188, 13345, 13566, 14915, 16014, 16485, 17898, 18683, 19380, 20881, 21980, 22610, 26690, 27132, 29830, 32028, 32970, 33915, 35796, 37366, 40035, 41762, 44745, 45220, 50711, 53380, 56049, 59660, 62643, 65940, 67830, 74732, 80070, 83524, 89490, 93415, 101422, 104405, 112098, 125286, 135660, 152133, 160140, 178980, 186830, 202844, 208810, 224196, 250572, 253555, 280245, 304266, 313215, 354977, 373660, 417620, 507110, 560490, 608532, 626430, 709954, 760665, 1014220, 1064931, 1120980, 1252860, 1419908, 1521330, 1774885, 2129862, 3042660, 3549770, 4259724, 5324655, 7099540, 10649310, 21298620]

約数ペア:

[(1, 21298620), (2, 10649310), (3, 7099540), (4, 5324655), (5, 4259724), (6, 3549770), (7, 3042660), (10, 2129862), (12, 1774885), (14, 1521330), (15, 1419908), (17, 1252860), (19, 1120980), (20, 1064931), (21, 1014220), (28, 760665), (30, 709954), (34, 626430), (35, 608532), (38, 560490), (42, 507110), (51, 417620), (57, 373660), (60, 354977), (68, 313215), (70, 304266), (76, 280245), (84, 253555), (85, 250572), (95, 224196), (102, 208810), (105, 202844), (114, 186830), (119, 178980), (133, 160140), (140, 152133), (157, 135660), (170, 125286), (190, 112098), (204, 104405), (210, 101422), (228, 93415), (238, 89490), (255, 83524), (266, 80070), (285, 74732), (314, 67830), (323, 65940), (340, 62643), (357, 59660), (380, 56049), (399, 53380), (420, 50711), (471, 45220), (476, 44745), (510, 41762), (532, 40035), (570, 37366), (595, 35796), (628, 33915), (646, 32970), (665, 32028), (714, 29830), (785, 27132), (798, 26690), (942, 22610), (969, 21980), (1020, 20881), (1099, 19380), (1140, 18683), (1190, 17898), (1292, 16485), (1330, 16014), (1428, 14915), (1570, 13566), (1596, 13345), (1615, 13188), (1785, 11932), (1884, 11305), (1938, 10990), (1995, 10676), (2198, 9690), (2261, 9420), (2355, 9044), (2380, 8949), (2660, 8007), (2669, 7980), (2983, 7140), (3140, 6783), (3230, 6594), (3297, 6460), (3570, 5966), (3876, 5495), (3990, 5338), (4396, 4845), (4522, 4710)]