81956368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1129}}^1$

素因数の和:1499

約数の個数: 40

約数和(自身を含む): 171647000

約数和(自身を除く): 89690632

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 349, 698, 1129, 1396, 2258, 2792, 4516, 4537, 5584, 9032, 9074, 14677, 18064, 18148, 29354, 36296, 58708, 72592, 117416, 234832, 394021, 788042, 1576084, 3152168, 5122273, 6304336, 10244546, 20489092, 40978184, 81956368]

約数ペア:

[(1, 81956368), (2, 40978184), (4, 20489092), (8, 10244546), (13, 6304336), (16, 5122273), (26, 3152168), (52, 1576084), (104, 788042), (208, 394021), (349, 234832), (698, 117416), (1129, 72592), (1396, 58708), (2258, 36296), (2792, 29354), (4516, 18148), (4537, 18064), (5584, 14677), (9032, 9074)]