40688740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{73}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 92587320

約数和(自身を除く): 51898580

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 73, 116, 124, 145, 146, 155, 290, 292, 310, 365, 580, 620, 730, 899, 961, 1460, 1798, 1922, 2117, 2263, 3596, 3844, 4234, 4495, 4526, 4805, 8468, 8990, 9052, 9610, 10585, 11315, 17980, 19220, 21170, 22630, 27869, 42340, 45260, 55738, 65627, 70153, 111476, 131254, 139345, 140306, 262508, 278690, 280612, 328135, 350765, 557380, 656270, 701530, 1312540, 1403060, 2034437, 4068874, 8137748, 10172185, 20344370, 40688740]

約数ペア:

[(1, 40688740), (2, 20344370), (4, 10172185), (5, 8137748), (10, 4068874), (20, 2034437), (29, 1403060), (31, 1312540), (58, 701530), (62, 656270), (73, 557380), (116, 350765), (124, 328135), (145, 280612), (146, 278690), (155, 262508), (290, 140306), (292, 139345), (310, 131254), (365, 111476), (580, 70153), (620, 65627), (730, 55738), (899, 45260), (961, 42340), (1460, 27869), (1798, 22630), (1922, 21170), (2117, 19220), (2263, 17980), (3596, 11315), (3844, 10585), (4234, 9610), (4495, 9052), (4526, 8990), (4805, 8468)]