21801945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{577}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 38286720

約数和(自身を除く): 16484775

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 229, 577, 687, 1145, 1731, 2519, 2885, 3435, 6347, 7557, 8655, 12595, 19041, 31735, 37785, 95205, 132133, 396399, 660665, 1453463, 1981995, 4360389, 7267315, 21801945]

約数ペア:

[(1, 21801945), (3, 7267315), (5, 4360389), (11, 1981995), (15, 1453463), (33, 660665), (55, 396399), (165, 132133), (229, 95205), (577, 37785), (687, 31735), (1145, 19041), (1731, 12595), (2519, 8655), (2885, 7557), (3435, 6347)]