21855990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{56041}}^1$

素因数の和:56064

約数の個数: 32

約数和(自身を含む): 56490336

約数和(自身を除く): 34634346

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 56041, 112082, 168123, 280205, 336246, 560410, 728533, 840615, 1457066, 1681230, 2185599, 3642665, 4371198, 7285330, 10927995, 21855990]

約数ペア:

[(1, 21855990), (2, 10927995), (3, 7285330), (5, 4371198), (6, 3642665), (10, 2185599), (13, 1681230), (15, 1457066), (26, 840615), (30, 728533), (39, 560410), (65, 336246), (78, 280205), (130, 168123), (195, 112082), (390, 56041)]