28968880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11681}}^1$

素因数の和:11725

約数の個数: 40

約数和(自身を含む): 69531264

約数和(自身を除く): 40562384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11681, 23362, 46724, 58405, 93448, 116810, 186896, 233620, 362111, 467240, 724222, 934480, 1448444, 1810555, 2896888, 3621110, 5793776, 7242220, 14484440, 28968880]

約数ペア:

[(1, 28968880), (2, 14484440), (4, 7242220), (5, 5793776), (8, 3621110), (10, 2896888), (16, 1810555), (20, 1448444), (31, 934480), (40, 724222), (62, 467240), (80, 362111), (124, 233620), (155, 186896), (248, 116810), (310, 93448), (496, 58405), (620, 46724), (1240, 23362), (2480, 11681)]