20628764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 40943616

約数和(自身を除く): 20314852

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 67, 124, 134, 191, 268, 382, 403, 764, 806, 871, 1612, 1742, 2077, 2483, 3484, 4154, 4966, 5921, 8308, 9932, 11842, 12797, 23684, 25594, 27001, 51188, 54002, 76973, 108004, 153946, 166361, 307892, 332722, 396707, 665444, 793414, 1586828, 5157191, 10314382, 20628764]

約数ペア:

[(1, 20628764), (2, 10314382), (4, 5157191), (13, 1586828), (26, 793414), (31, 665444), (52, 396707), (62, 332722), (67, 307892), (124, 166361), (134, 153946), (191, 108004), (268, 76973), (382, 54002), (403, 51188), (764, 27001), (806, 25594), (871, 23684), (1612, 12797), (1742, 11842), (2077, 9932), (2483, 8308), (3484, 5921), (4154, 4966)]