80518100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{257}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 189680568

約数和(自身を除く): 109162468

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 241, 257, 260, 325, 482, 514, 650, 964, 1028, 1205, 1285, 1300, 2410, 2570, 3133, 3341, 4820, 5140, 6025, 6266, 6425, 6682, 12050, 12532, 12850, 13364, 15665, 16705, 24100, 25700, 31330, 33410, 61937, 62660, 66820, 78325, 83525, 123874, 156650, 167050, 247748, 309685, 313300, 334100, 619370, 805181, 1238740, 1548425, 1610362, 3096850, 3220724, 4025905, 6193700, 8051810, 16103620, 20129525, 40259050, 80518100]

約数ペア:

[(1, 80518100), (2, 40259050), (4, 20129525), (5, 16103620), (10, 8051810), (13, 6193700), (20, 4025905), (25, 3220724), (26, 3096850), (50, 1610362), (52, 1548425), (65, 1238740), (100, 805181), (130, 619370), (241, 334100), (257, 313300), (260, 309685), (325, 247748), (482, 167050), (514, 156650), (650, 123874), (964, 83525), (1028, 78325), (1205, 66820), (1285, 62660), (1300, 61937), (2410, 33410), (2570, 31330), (3133, 25700), (3341, 24100), (4820, 16705), (5140, 15665), (6025, 13364), (6266, 12850), (6425, 12532), (6682, 12050)]