20302880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:298

約数の個数: 96

約数和(自身を含む): 53089344

約数和(自身を除く): 32786464

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 65, 80, 86, 104, 130, 160, 172, 208, 215, 227, 260, 344, 416, 430, 454, 520, 559, 688, 860, 908, 1040, 1118, 1135, 1376, 1720, 1816, 2080, 2236, 2270, 2795, 2951, 3440, 3632, 4472, 4540, 5590, 5902, 6880, 7264, 8944, 9080, 9761, 11180, 11804, 14755, 17888, 18160, 19522, 22360, 23608, 29510, 36320, 39044, 44720, 47216, 48805, 59020, 78088, 89440, 94432, 97610, 118040, 126893, 156176, 195220, 236080, 253786, 312352, 390440, 472160, 507572, 634465, 780880, 1015144, 1268930, 1561760, 2030288, 2537860, 4060576, 5075720, 10151440, 20302880]

約数ペア:

[(1, 20302880), (2, 10151440), (4, 5075720), (5, 4060576), (8, 2537860), (10, 2030288), (13, 1561760), (16, 1268930), (20, 1015144), (26, 780880), (32, 634465), (40, 507572), (43, 472160), (52, 390440), (65, 312352), (80, 253786), (86, 236080), (104, 195220), (130, 156176), (160, 126893), (172, 118040), (208, 97610), (215, 94432), (227, 89440), (260, 78088), (344, 59020), (416, 48805), (430, 47216), (454, 44720), (520, 39044), (559, 36320), (688, 29510), (860, 23608), (908, 22360), (1040, 19522), (1118, 18160), (1135, 17888), (1376, 14755), (1720, 11804), (1816, 11180), (2080, 9761), (2236, 9080), (2270, 8944), (2795, 7264), (2951, 6880), (3440, 5902), (3632, 5590), (4472, 4540)]