20040997480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{633407}}^1$

素因数の和:633538

約数の個数: 64

約数和(自身を含む): 51990128640

約数和(自身を除く): 31949131160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 791, 904, 1130, 1582, 2260, 3164, 3955, 4520, 6328, 7910, 15820, 31640, 633407, 1266814, 2533628, 3167035, 4433849, 5067256, 6334070, 8867698, 12668140, 17735396, 22169245, 25336280, 35470792, 44338490, 71574991, 88676980, 143149982, 177353960, 286299964, 357874955, 501024937, 572599928, 715749910, 1002049874, 1431499820, 2004099748, 2505124685, 2862999640, 4008199496, 5010249370, 10020498740, 20040997480]

約数ペア:

[(1, 20040997480), (2, 10020498740), (4, 5010249370), (5, 4008199496), (7, 2862999640), (8, 2505124685), (10, 2004099748), (14, 1431499820), (20, 1002049874), (28, 715749910), (35, 572599928), (40, 501024937), (56, 357874955), (70, 286299964), (113, 177353960), (140, 143149982), (226, 88676980), (280, 71574991), (452, 44338490), (565, 35470792), (791, 25336280), (904, 22169245), (1130, 17735396), (1582, 12668140), (2260, 8867698), (3164, 6334070), (3955, 5067256), (4520, 4433849), (6328, 3167035), (7910, 2533628), (15820, 1266814), (31640, 633407)]