81321890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{6449}}^1$

素因数の和:6566

約数の個数: 32

約数和(自身を含む): 159289200

約数和(自身を除く): 77967310

約数列:

[1, 2, 5, 10, 13, 26, 65, 97, 130, 194, 485, 970, 1261, 2522, 6305, 6449, 12610, 12898, 32245, 64490, 83837, 167674, 419185, 625553, 838370, 1251106, 3127765, 6255530, 8132189, 16264378, 40660945, 81321890]

約数ペア:

[(1, 81321890), (2, 40660945), (5, 16264378), (10, 8132189), (13, 6255530), (26, 3127765), (65, 1251106), (97, 838370), (130, 625553), (194, 419185), (485, 167674), (970, 83837), (1261, 64490), (2522, 32245), (6305, 12898), (6449, 12610)]