28153750

素因数分解:

$2^1\times 5^4\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:346

約数の個数: 40

約数和(自身を含む): 53532864

約数和(自身を除く): 25379114

約数列:

[1, 2, 5, 10, 25, 50, 101, 125, 202, 223, 250, 446, 505, 625, 1010, 1115, 1250, 2230, 2525, 5050, 5575, 11150, 12625, 22523, 25250, 27875, 45046, 55750, 63125, 112615, 126250, 139375, 225230, 278750, 563075, 1126150, 2815375, 5630750, 14076875, 28153750]

約数ペア:

[(1, 28153750), (2, 14076875), (5, 5630750), (10, 2815375), (25, 1126150), (50, 563075), (101, 278750), (125, 225230), (202, 139375), (223, 126250), (250, 112615), (446, 63125), (505, 55750), (625, 45046), (1010, 27875), (1115, 25250), (1250, 22523), (2230, 12625), (2525, 11150), (5050, 5575)]