18883280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 80

約数和(自身を含む): 48163584

約数和(自身を除く): 29280304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 271, 335, 520, 536, 542, 670, 871, 1040, 1072, 1084, 1340, 1355, 1742, 2168, 2680, 2710, 3484, 3523, 4336, 4355, 5360, 5420, 6968, 7046, 8710, 10840, 13936, 14092, 17420, 17615, 18157, 21680, 28184, 34840, 35230, 36314, 56368, 69680, 70460, 72628, 90785, 140920, 145256, 181570, 236041, 281840, 290512, 363140, 472082, 726280, 944164, 1180205, 1452560, 1888328, 2360410, 3776656, 4720820, 9441640, 18883280]

約数ペア:

[(1, 18883280), (2, 9441640), (4, 4720820), (5, 3776656), (8, 2360410), (10, 1888328), (13, 1452560), (16, 1180205), (20, 944164), (26, 726280), (40, 472082), (52, 363140), (65, 290512), (67, 281840), (80, 236041), (104, 181570), (130, 145256), (134, 140920), (208, 90785), (260, 72628), (268, 70460), (271, 69680), (335, 56368), (520, 36314), (536, 35230), (542, 34840), (670, 28184), (871, 21680), (1040, 18157), (1072, 17615), (1084, 17420), (1340, 14092), (1355, 13936), (1742, 10840), (2168, 8710), (2680, 7046), (2710, 6968), (3484, 5420), (3523, 5360), (4336, 4355)]