81017248

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:318

約数の個数: 72

約数和(自身を含む): 175978656

約数和(自身を除く): 94961408

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 169, 208, 211, 284, 338, 416, 422, 568, 676, 844, 923, 1136, 1352, 1688, 1846, 2272, 2704, 2743, 3376, 3692, 5408, 5486, 6752, 7384, 10972, 11999, 14768, 14981, 21944, 23998, 29536, 29962, 35659, 43888, 47996, 59924, 71318, 87776, 95992, 119848, 142636, 191984, 194753, 239696, 285272, 383968, 389506, 479392, 570544, 779012, 1141088, 1558024, 2531789, 3116048, 5063578, 6232096, 10127156, 20254312, 40508624, 81017248]

約数ペア:

[(1, 81017248), (2, 40508624), (4, 20254312), (8, 10127156), (13, 6232096), (16, 5063578), (26, 3116048), (32, 2531789), (52, 1558024), (71, 1141088), (104, 779012), (142, 570544), (169, 479392), (208, 389506), (211, 383968), (284, 285272), (338, 239696), (416, 194753), (422, 191984), (568, 142636), (676, 119848), (844, 95992), (923, 87776), (1136, 71318), (1352, 59924), (1688, 47996), (1846, 43888), (2272, 35659), (2704, 29962), (2743, 29536), (3376, 23998), (3692, 21944), (5408, 14981), (5486, 14768), (6752, 11999), (7384, 10972)]