28720480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10559}}^1$

素因数の和:10591

約数の個数: 48

約数和(自身を含む): 71850240

約数和(自身を除く): 43129760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 10559, 21118, 42236, 52795, 84472, 105590, 168944, 179503, 211180, 337888, 359006, 422360, 718012, 844720, 897515, 1436024, 1689440, 1795030, 2872048, 3590060, 5744096, 7180120, 14360240, 28720480]

約数ペア:

[(1, 28720480), (2, 14360240), (4, 7180120), (5, 5744096), (8, 3590060), (10, 2872048), (16, 1795030), (17, 1689440), (20, 1436024), (32, 897515), (34, 844720), (40, 718012), (68, 422360), (80, 359006), (85, 337888), (136, 211180), (160, 179503), (170, 168944), (272, 105590), (340, 84472), (544, 52795), (680, 42236), (1360, 21118), (2720, 10559)]