20547280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{859}}^1$

素因数の和:908

約数の個数: 80

約数和(自身を含む): 53746560

約数和(自身を除く): 33199280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 859, 920, 1040, 1196, 1495, 1718, 1840, 2392, 2990, 3436, 4295, 4784, 5980, 6872, 8590, 11167, 11960, 13744, 17180, 19757, 22334, 23920, 34360, 39514, 44668, 55835, 68720, 79028, 89336, 98785, 111670, 158056, 178672, 197570, 223340, 256841, 316112, 395140, 446680, 513682, 790280, 893360, 1027364, 1284205, 1580560, 2054728, 2568410, 4109456, 5136820, 10273640, 20547280]

約数ペア:

[(1, 20547280), (2, 10273640), (4, 5136820), (5, 4109456), (8, 2568410), (10, 2054728), (13, 1580560), (16, 1284205), (20, 1027364), (23, 893360), (26, 790280), (40, 513682), (46, 446680), (52, 395140), (65, 316112), (80, 256841), (92, 223340), (104, 197570), (115, 178672), (130, 158056), (184, 111670), (208, 98785), (230, 89336), (260, 79028), (299, 68720), (368, 55835), (460, 44668), (520, 39514), (598, 34360), (859, 23920), (920, 22334), (1040, 19757), (1196, 17180), (1495, 13744), (1718, 11960), (1840, 11167), (2392, 8590), (2990, 6872), (3436, 5980), (4295, 4784)]