21930125

素因数分解:

$5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 31809024

約数和(自身を除く): 9878899

約数列:

[1, 5, 7, 25, 35, 71, 125, 175, 353, 355, 497, 875, 1765, 1775, 2471, 2485, 8825, 8875, 12355, 12425, 25063, 44125, 61775, 62125, 125315, 175441, 308875, 626575, 877205, 3132875, 4386025, 21930125]

約数ペア:

[(1, 21930125), (5, 4386025), (7, 3132875), (25, 877205), (35, 626575), (71, 308875), (125, 175441), (175, 125315), (353, 62125), (355, 61775), (497, 44125), (875, 25063), (1765, 12425), (1775, 12355), (2471, 8875), (2485, 8825)]