20856160

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:336

約数の個数: 96

約数和(自身を含む): 54698112

約数和(自身を除く): 33841952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 65, 74, 80, 104, 130, 148, 160, 185, 208, 260, 271, 296, 370, 416, 481, 520, 542, 592, 740, 962, 1040, 1084, 1184, 1355, 1480, 1924, 2080, 2168, 2405, 2710, 2960, 3523, 3848, 4336, 4810, 5420, 5920, 7046, 7696, 8672, 9620, 10027, 10840, 14092, 15392, 17615, 19240, 20054, 21680, 28184, 35230, 38480, 40108, 43360, 50135, 56368, 70460, 76960, 80216, 100270, 112736, 130351, 140920, 160432, 200540, 260702, 281840, 320864, 401080, 521404, 563680, 651755, 802160, 1042808, 1303510, 1604320, 2085616, 2607020, 4171232, 5214040, 10428080, 20856160]

約数ペア:

[(1, 20856160), (2, 10428080), (4, 5214040), (5, 4171232), (8, 2607020), (10, 2085616), (13, 1604320), (16, 1303510), (20, 1042808), (26, 802160), (32, 651755), (37, 563680), (40, 521404), (52, 401080), (65, 320864), (74, 281840), (80, 260702), (104, 200540), (130, 160432), (148, 140920), (160, 130351), (185, 112736), (208, 100270), (260, 80216), (271, 76960), (296, 70460), (370, 56368), (416, 50135), (481, 43360), (520, 40108), (542, 38480), (592, 35230), (740, 28184), (962, 21680), (1040, 20054), (1084, 19240), (1184, 17615), (1355, 15392), (1480, 14092), (1924, 10840), (2080, 10027), (2168, 9620), (2405, 8672), (2710, 7696), (2960, 7046), (3523, 5920), (3848, 5420), (4336, 4810)]