21328750

素因数分解:

$2^1\times 5^4\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:286

約数の個数: 40

約数和(自身を含む): 40599504

約数和(自身を除く): 19270754

約数列:

[1, 2, 5, 10, 25, 50, 113, 125, 151, 226, 250, 302, 565, 625, 755, 1130, 1250, 1510, 2825, 3775, 5650, 7550, 14125, 17063, 18875, 28250, 34126, 37750, 70625, 85315, 94375, 141250, 170630, 188750, 426575, 853150, 2132875, 4265750, 10664375, 21328750]

約数ペア:

[(1, 21328750), (2, 10664375), (5, 4265750), (10, 2132875), (25, 853150), (50, 426575), (113, 188750), (125, 170630), (151, 141250), (226, 94375), (250, 85315), (302, 70625), (565, 37750), (625, 34126), (755, 28250), (1130, 18875), (1250, 17063), (1510, 14125), (2825, 7550), (3775, 5650)]