19855280

素因数分解:

$2^4\times 5^1\times {\mathrm{283}}^1\times {\mathrm{877}}^1$

素因数の和:1173

約数の個数: 40

約数和(自身を含む): 46379472

約数和(自身を除く): 26524192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 283, 566, 877, 1132, 1415, 1754, 2264, 2830, 3508, 4385, 4528, 5660, 7016, 8770, 11320, 14032, 17540, 22640, 35080, 70160, 248191, 496382, 992764, 1240955, 1985528, 2481910, 3971056, 4963820, 9927640, 19855280]

約数ペア:

[(1, 19855280), (2, 9927640), (4, 4963820), (5, 3971056), (8, 2481910), (10, 1985528), (16, 1240955), (20, 992764), (40, 496382), (80, 248191), (283, 70160), (566, 35080), (877, 22640), (1132, 17540), (1415, 14032), (1754, 11320), (2264, 8770), (2830, 7016), (3508, 5660), (4385, 4528)]