641532016

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{149}}^1\times {\mathrm{4561}}^1$

素因数の和:4777

約数の個数: 40

約数和(自身を含む): 1272798000

約数和(自身を除く): 631265984

約数列:

[1, 2, 4, 8, 16, 59, 118, 149, 236, 298, 472, 596, 944, 1192, 2384, 4561, 8791, 9122, 17582, 18244, 35164, 36488, 70328, 72976, 140656, 269099, 538198, 679589, 1076396, 1359178, 2152792, 2718356, 4305584, 5436712, 10873424, 40095751, 80191502, 160383004, 320766008, 641532016]

約数ペア:

[(1, 641532016), (2, 320766008), (4, 160383004), (8, 80191502), (16, 40095751), (59, 10873424), (118, 5436712), (149, 4305584), (236, 2718356), (298, 2152792), (472, 1359178), (596, 1076396), (944, 679589), (1192, 538198), (2384, 269099), (4561, 140656), (8791, 72976), (9122, 70328), (17582, 36488), (18244, 35164)]