87970870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:397

約数の個数: 64

約数和(自身を含む): 178827264

約数和(自身を除く): 90856394

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 83, 130, 155, 166, 263, 310, 403, 415, 526, 806, 830, 1079, 1315, 2015, 2158, 2573, 2630, 3419, 4030, 5146, 5395, 6838, 8153, 10790, 12865, 16306, 17095, 21829, 25730, 33449, 34190, 40765, 43658, 66898, 81530, 105989, 109145, 167245, 211978, 218290, 283777, 334490, 529945, 567554, 676699, 1059890, 1353398, 1418885, 2837770, 3383495, 6766990, 8797087, 17594174, 43985435, 87970870]

約数ペア:

[(1, 87970870), (2, 43985435), (5, 17594174), (10, 8797087), (13, 6766990), (26, 3383495), (31, 2837770), (62, 1418885), (65, 1353398), (83, 1059890), (130, 676699), (155, 567554), (166, 529945), (263, 334490), (310, 283777), (403, 218290), (415, 211978), (526, 167245), (806, 109145), (830, 105989), (1079, 81530), (1315, 66898), (2015, 43658), (2158, 40765), (2573, 34190), (2630, 33449), (3419, 25730), (4030, 21829), (5146, 17095), (5395, 16306), (6838, 12865), (8153, 10790)]