78869440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18959}}^1$

素因数の和:18989

約数の個数: 56

約数和(自身を含む): 202265280

約数和(自身を除く): 123395840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 18959, 37918, 75836, 94795, 151672, 189590, 246467, 303344, 379180, 492934, 606688, 758360, 985868, 1213376, 1232335, 1516720, 1971736, 2464670, 3033440, 3943472, 4929340, 6066880, 7886944, 9858680, 15773888, 19717360, 39434720, 78869440]

約数ペア:

[(1, 78869440), (2, 39434720), (4, 19717360), (5, 15773888), (8, 9858680), (10, 7886944), (13, 6066880), (16, 4929340), (20, 3943472), (26, 3033440), (32, 2464670), (40, 1971736), (52, 1516720), (64, 1232335), (65, 1213376), (80, 985868), (104, 758360), (130, 606688), (160, 492934), (208, 379180), (260, 303344), (320, 246467), (416, 189590), (520, 151672), (832, 94795), (1040, 75836), (2080, 37918), (4160, 18959)]