15921880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 39241440

約数和(自身を除く): 23319560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 457, 520, 536, 670, 871, 914, 1340, 1742, 1828, 2285, 2680, 3484, 3656, 4355, 4570, 5941, 6968, 8710, 9140, 11882, 17420, 18280, 23764, 29705, 30619, 34840, 47528, 59410, 61238, 118820, 122476, 153095, 237640, 244952, 306190, 398047, 612380, 796094, 1224760, 1592188, 1990235, 3184376, 3980470, 7960940, 15921880]

約数ペア:

[(1, 15921880), (2, 7960940), (4, 3980470), (5, 3184376), (8, 1990235), (10, 1592188), (13, 1224760), (20, 796094), (26, 612380), (40, 398047), (52, 306190), (65, 244952), (67, 237640), (104, 153095), (130, 122476), (134, 118820), (260, 61238), (268, 59410), (335, 47528), (457, 34840), (520, 30619), (536, 29705), (670, 23764), (871, 18280), (914, 17420), (1340, 11882), (1742, 9140), (1828, 8710), (2285, 6968), (2680, 5941), (3484, 4570), (3656, 4355)]