28198625

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 45147648

約数和(自身を除く): 16949023

約数列:

[1, 5, 7, 13, 25, 35, 37, 65, 67, 91, 125, 175, 185, 259, 325, 335, 455, 469, 481, 871, 875, 925, 1295, 1625, 1675, 2275, 2345, 2405, 2479, 3367, 4355, 4625, 6097, 6475, 8375, 11375, 11725, 12025, 12395, 16835, 17353, 21775, 30485, 32227, 32375, 58625, 60125, 61975, 84175, 86765, 108875, 152425, 161135, 225589, 309875, 420875, 433825, 762125, 805675, 1127945, 2169125, 4028375, 5639725, 28198625]

約数ペア:

[(1, 28198625), (5, 5639725), (7, 4028375), (13, 2169125), (25, 1127945), (35, 805675), (37, 762125), (65, 433825), (67, 420875), (91, 309875), (125, 225589), (175, 161135), (185, 152425), (259, 108875), (325, 86765), (335, 84175), (455, 61975), (469, 60125), (481, 58625), (871, 32375), (875, 32227), (925, 30485), (1295, 21775), (1625, 17353), (1675, 16835), (2275, 12395), (2345, 12025), (2405, 11725), (2479, 11375), (3367, 8375), (4355, 6475), (4625, 6097)]