81480400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6571}}^1$

素因数の和:6620

約数の個数: 60

約数和(自身を含む): 202102144

約数和(自身を除く): 120621744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 6571, 12400, 13142, 26284, 32855, 52568, 65710, 105136, 131420, 164275, 203701, 262840, 328550, 407402, 525680, 657100, 814804, 1018505, 1314200, 1629608, 2037010, 2628400, 3259216, 4074020, 5092525, 8148040, 10185050, 16296080, 20370100, 40740200, 81480400]

約数ペア:

[(1, 81480400), (2, 40740200), (4, 20370100), (5, 16296080), (8, 10185050), (10, 8148040), (16, 5092525), (20, 4074020), (25, 3259216), (31, 2628400), (40, 2037010), (50, 1629608), (62, 1314200), (80, 1018505), (100, 814804), (124, 657100), (155, 525680), (200, 407402), (248, 328550), (310, 262840), (400, 203701), (496, 164275), (620, 131420), (775, 105136), (1240, 65710), (1550, 52568), (2480, 32855), (3100, 26284), (6200, 13142), (6571, 12400)]