21807710

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{541}}^1$

素因数の和:716

約数の個数: 32

約数和(自身を含む): 40975200

約数和(自身を除く): 19167490

約数列:

[1, 2, 5, 10, 29, 58, 139, 145, 278, 290, 541, 695, 1082, 1390, 2705, 4031, 5410, 8062, 15689, 20155, 31378, 40310, 75199, 78445, 150398, 156890, 375995, 751990, 2180771, 4361542, 10903855, 21807710]

約数ペア:

[(1, 21807710), (2, 10903855), (5, 4361542), (10, 2180771), (29, 751990), (58, 375995), (139, 156890), (145, 150398), (278, 78445), (290, 75199), (541, 40310), (695, 31378), (1082, 20155), (1390, 15689), (2705, 8062), (4031, 5410)]