391527890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 780887520

約数和(自身を除く): 389359630

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 97, 122, 130, 194, 305, 485, 509, 610, 793, 970, 1018, 1261, 1586, 2522, 2545, 3965, 5090, 5917, 6305, 6617, 7930, 11834, 12610, 13234, 29585, 31049, 33085, 49373, 59170, 62098, 66170, 76921, 98746, 153842, 155245, 246865, 310490, 384605, 403637, 493730, 641849, 769210, 807274, 1283698, 2018185, 3011753, 3209245, 4036370, 6023506, 6418490, 15058765, 30117530, 39152789, 78305578, 195763945, 391527890]

約数ペア:

[(1, 391527890), (2, 195763945), (5, 78305578), (10, 39152789), (13, 30117530), (26, 15058765), (61, 6418490), (65, 6023506), (97, 4036370), (122, 3209245), (130, 3011753), (194, 2018185), (305, 1283698), (485, 807274), (509, 769210), (610, 641849), (793, 493730), (970, 403637), (1018, 384605), (1261, 310490), (1586, 246865), (2522, 155245), (2545, 153842), (3965, 98746), (5090, 76921), (5917, 66170), (6305, 62098), (6617, 59170), (7930, 49373), (11834, 33085), (12610, 31049), (13234, 29585)]