21784785

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4259}}^1$

素因数の和:4309

約数の個数: 32

約数和(自身を含む): 39260160

約数和(自身を除く): 17475375

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4259, 5115, 12777, 21295, 46849, 63885, 132029, 140547, 234245, 396087, 660145, 702735, 1452319, 1980435, 4356957, 7261595, 21784785]

約数ペア:

[(1, 21784785), (3, 7261595), (5, 4356957), (11, 1980435), (15, 1452319), (31, 702735), (33, 660145), (55, 396087), (93, 234245), (155, 140547), (165, 132029), (341, 63885), (465, 46849), (1023, 21295), (1705, 12777), (4259, 5115)]