208784680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{2659}}^1$

素因数の和:2834

約数の個数: 64

約数和(自身を含む): 509443200

約数和(自身を除く): 300658520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 151, 260, 302, 520, 604, 755, 1208, 1510, 1963, 2659, 3020, 3926, 5318, 6040, 7852, 9815, 10636, 13295, 15704, 19630, 21272, 26590, 34567, 39260, 53180, 69134, 78520, 106360, 138268, 172835, 276536, 345670, 401509, 691340, 803018, 1382680, 1606036, 2007545, 3212072, 4015090, 5219617, 8030180, 10439234, 16060360, 20878468, 26098085, 41756936, 52196170, 104392340, 208784680]

約数ペア:

[(1, 208784680), (2, 104392340), (4, 52196170), (5, 41756936), (8, 26098085), (10, 20878468), (13, 16060360), (20, 10439234), (26, 8030180), (40, 5219617), (52, 4015090), (65, 3212072), (104, 2007545), (130, 1606036), (151, 1382680), (260, 803018), (302, 691340), (520, 401509), (604, 345670), (755, 276536), (1208, 172835), (1510, 138268), (1963, 106360), (2659, 78520), (3020, 69134), (3926, 53180), (5318, 39260), (6040, 34567), (7852, 26590), (9815, 21272), (10636, 19630), (13295, 15704)]