19685985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{521}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 34577280

約数和(自身を除く): 14891295

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 229, 521, 687, 1145, 1563, 2519, 2605, 3435, 5731, 7557, 7815, 12595, 17193, 28655, 37785, 85965, 119309, 357927, 596545, 1312399, 1789635, 3937197, 6561995, 19685985]

約数ペア:

[(1, 19685985), (3, 6561995), (5, 3937197), (11, 1789635), (15, 1312399), (33, 596545), (55, 357927), (165, 119309), (229, 85965), (521, 37785), (687, 28655), (1145, 17193), (1563, 12595), (2519, 7815), (2605, 7557), (3435, 5731)]