28458440

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{5431}}^1$

素因数の和:5573

約数の個数: 32

約数和(自身を含む): 64532160

約数和(自身を除く): 36073720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 5431, 10862, 21724, 27155, 43448, 54310, 108620, 217240, 711461, 1422922, 2845844, 3557305, 5691688, 7114610, 14229220, 28458440]

約数ペア:

[(1, 28458440), (2, 14229220), (4, 7114610), (5, 5691688), (8, 3557305), (10, 2845844), (20, 1422922), (40, 711461), (131, 217240), (262, 108620), (524, 54310), (655, 43448), (1048, 27155), (1310, 21724), (2620, 10862), (5240, 5431)]