19856408

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1021}}^1$

素因数の和:1068

約数の個数: 64

約数和(自身を含む): 46357920

約数和(自身を除く): 26501512

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 44, 52, 68, 88, 104, 136, 143, 187, 221, 286, 374, 442, 572, 748, 884, 1021, 1144, 1496, 1768, 2042, 2431, 4084, 4862, 8168, 9724, 11231, 13273, 17357, 19448, 22462, 26546, 34714, 44924, 53092, 69428, 89848, 106184, 138856, 146003, 190927, 225641, 292006, 381854, 451282, 584012, 763708, 902564, 1168024, 1527416, 1805128, 2482051, 4964102, 9928204, 19856408]

約数ペア:

[(1, 19856408), (2, 9928204), (4, 4964102), (8, 2482051), (11, 1805128), (13, 1527416), (17, 1168024), (22, 902564), (26, 763708), (34, 584012), (44, 451282), (52, 381854), (68, 292006), (88, 225641), (104, 190927), (136, 146003), (143, 138856), (187, 106184), (221, 89848), (286, 69428), (374, 53092), (442, 44924), (572, 34714), (748, 26546), (884, 22462), (1021, 19448), (1144, 17357), (1496, 13273), (1768, 11231), (2042, 9724), (2431, 8168), (4084, 4862)]