251518.0000000

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1399}}^1$

素因数の和:1428

約数の個数: 48

約数和(自身を含む): 6585600

約数和(自身を除く): 4039420

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1399, 1820, 2798, 5596, 6995, 9793, 13990, 18187, 19586, 27980, 36374, 39172, 48965, 72748, 90935, 97930, 127309, 181870, 195860, 254618, 363740, 509236, 636545, 1273090, 2546180]

約数ペア:

[(1, 2546180), (2, 1273090), (4, 636545), (5, 509236), (7, 363740), (10, 254618), (13, 195860), (14, 181870), (20, 127309), (26, 97930), (28, 90935), (35, 72748), (52, 48965), (65, 39172), (70, 36374), (91, 27980), (130, 19586), (140, 18187), (182, 13990), (260, 9793), (364, 6995), (455, 5596), (910, 2798), (1399, 1820)]