19859060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4493}}^1$

素因数の和:4532

約数の個数: 48

約数和(自身を含む): 47564496

約数和(自身を除く): 27705436

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4493, 8986, 17972, 22465, 44930, 58409, 76381, 89860, 116818, 152762, 233636, 292045, 305524, 381905, 584090, 763810, 992953, 1168180, 1527620, 1985906, 3971812, 4964765, 9929530, 19859060]

約数ペア:

[(1, 19859060), (2, 9929530), (4, 4964765), (5, 3971812), (10, 1985906), (13, 1527620), (17, 1168180), (20, 992953), (26, 763810), (34, 584090), (52, 381905), (65, 305524), (68, 292045), (85, 233636), (130, 152762), (170, 116818), (221, 89860), (260, 76381), (340, 58409), (442, 44930), (884, 22465), (1105, 17972), (2210, 8986), (4420, 4493)]