208515920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1013}}^1$

素因数の和:1140

約数の個数: 80

約数和(自身を含む): 506967552

約数和(自身を除く): 298451632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 124, 155, 166, 248, 310, 332, 415, 496, 620, 664, 830, 1013, 1240, 1328, 1660, 2026, 2480, 2573, 3320, 4052, 5065, 5146, 6640, 8104, 10130, 10292, 12865, 16208, 20260, 20584, 25730, 31403, 40520, 41168, 51460, 62806, 81040, 84079, 102920, 125612, 157015, 168158, 205840, 251224, 314030, 336316, 420395, 502448, 628060, 672632, 840790, 1256120, 1345264, 1681580, 2512240, 2606449, 3363160, 5212898, 6726320, 10425796, 13032245, 20851592, 26064490, 41703184, 52128980, 104257960, 208515920]

約数ペア:

[(1, 208515920), (2, 104257960), (4, 52128980), (5, 41703184), (8, 26064490), (10, 20851592), (16, 13032245), (20, 10425796), (31, 6726320), (40, 5212898), (62, 3363160), (80, 2606449), (83, 2512240), (124, 1681580), (155, 1345264), (166, 1256120), (248, 840790), (310, 672632), (332, 628060), (415, 502448), (496, 420395), (620, 336316), (664, 314030), (830, 251224), (1013, 205840), (1240, 168158), (1328, 157015), (1660, 125612), (2026, 102920), (2480, 84079), (2573, 81040), (3320, 62806), (4052, 51460), (5065, 41168), (5146, 40520), (6640, 31403), (8104, 25730), (10130, 20584), (10292, 20260), (12865, 16208)]