21874275

素因数分解:

$3^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{509}}^1$

素因数の和:716

約数の個数: 36

約数和(自身を含む): 39461760

約数和(自身を除く): 17587485

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 191, 225, 509, 573, 955, 1527, 1719, 2545, 2865, 4581, 4775, 7635, 8595, 12725, 14325, 22905, 38175, 42975, 97219, 114525, 291657, 486095, 874971, 1458285, 2430475, 4374855, 7291425, 21874275]

約数ペア:

[(1, 21874275), (3, 7291425), (5, 4374855), (9, 2430475), (15, 1458285), (25, 874971), (45, 486095), (75, 291657), (191, 114525), (225, 97219), (509, 42975), (573, 38175), (955, 22905), (1527, 14325), (1719, 12725), (2545, 8595), (2865, 7635), (4581, 4775)]