20344370

素因数分解:

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

素因数の和:171

約数の個数: 48

約数和(自身を含む): 39680280

約数和(自身を除く): 19335910

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 73, 145, 146, 155, 290, 310, 365, 730, 899, 961, 1798, 1922, 2117, 2263, 4234, 4495, 4526, 4805, 8990, 9610, 10585, 11315, 21170, 22630, 27869, 55738, 65627, 70153, 131254, 139345, 140306, 278690, 328135, 350765, 656270, 701530, 2034437, 4068874, 10172185, 20344370]

約数ペア:

[(1, 20344370), (2, 10172185), (5, 4068874), (10, 2034437), (29, 701530), (31, 656270), (58, 350765), (62, 328135), (73, 278690), (145, 140306), (146, 139345), (155, 131254), (290, 70153), (310, 65627), (365, 55738), (730, 27869), (899, 22630), (961, 21170), (1798, 11315), (1922, 10585), (2117, 9610), (2263, 8990), (4234, 4805), (4495, 4526)]