287540980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{1439}}^1$

素因数の和:1648

約数の個数: 48

約数和(自身を含む): 616412160

約数和(自身を除く): 328871180

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 388, 412, 485, 515, 970, 1030, 1439, 1940, 2060, 2878, 5756, 7195, 9991, 14390, 19982, 28780, 39964, 49955, 99910, 139583, 148217, 199820, 279166, 296434, 558332, 592868, 697915, 741085, 1395830, 1482170, 2791660, 2964340, 14377049, 28754098, 57508196, 71885245, 143770490, 287540980]

約数ペア:

[(1, 287540980), (2, 143770490), (4, 71885245), (5, 57508196), (10, 28754098), (20, 14377049), (97, 2964340), (103, 2791660), (194, 1482170), (206, 1395830), (388, 741085), (412, 697915), (485, 592868), (515, 558332), (970, 296434), (1030, 279166), (1439, 199820), (1940, 148217), (2060, 139583), (2878, 99910), (5756, 49955), (7195, 39964), (9991, 28780), (14390, 19982)]