21673729

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 27907200

約数和(自身を除く): 6233471

約数列:

[1, 7, 11, 49, 77, 79, 509, 539, 553, 869, 3563, 3871, 5599, 6083, 24941, 39193, 40211, 42581, 274351, 281477, 442321, 1970339, 3096247, 21673729]

約数ペア:

[(1, 21673729), (7, 3096247), (11, 1970339), (49, 442321), (77, 281477), (79, 274351), (509, 42581), (539, 40211), (553, 39193), (869, 24941), (3563, 6083), (3871, 5599)]