19616480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9431}}^1$

素因数の和:9459

約数の個数: 48

約数和(自身を含む): 49914144

約数和(自身を除く): 30297664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9431, 18862, 37724, 47155, 75448, 94310, 122603, 150896, 188620, 245206, 301792, 377240, 490412, 613015, 754480, 980824, 1226030, 1508960, 1961648, 2452060, 3923296, 4904120, 9808240, 19616480]

約数ペア:

[(1, 19616480), (2, 9808240), (4, 4904120), (5, 3923296), (8, 2452060), (10, 1961648), (13, 1508960), (16, 1226030), (20, 980824), (26, 754480), (32, 613015), (40, 490412), (52, 377240), (65, 301792), (80, 245206), (104, 188620), (130, 150896), (160, 122603), (208, 94310), (260, 75448), (416, 47155), (520, 37724), (1040, 18862), (2080, 9431)]