15489880

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1129}}^1$

素因数の和:1161

約数の個数: 64

約数和(自身を含む): 40680000

約数和(自身を除く): 25190120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1129, 1372, 1715, 1960, 2258, 2744, 3430, 4516, 5645, 6860, 7903, 9032, 11290, 13720, 15806, 22580, 31612, 39515, 45160, 55321, 63224, 79030, 110642, 158060, 221284, 276605, 316120, 387247, 442568, 553210, 774494, 1106420, 1548988, 1936235, 2212840, 3097976, 3872470, 7744940, 15489880]

約数ペア:

[(1, 15489880), (2, 7744940), (4, 3872470), (5, 3097976), (7, 2212840), (8, 1936235), (10, 1548988), (14, 1106420), (20, 774494), (28, 553210), (35, 442568), (40, 387247), (49, 316120), (56, 276605), (70, 221284), (98, 158060), (140, 110642), (196, 79030), (245, 63224), (280, 55321), (343, 45160), (392, 39515), (490, 31612), (686, 22580), (980, 15806), (1129, 13720), (1372, 11290), (1715, 9032), (1960, 7903), (2258, 6860), (2744, 5645), (3430, 4516)]