21200790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54361}}^1$

素因数の和:54384

約数の個数: 32

約数和(自身を含む): 54796896

約数和(自身を除く): 33596106

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54361, 108722, 163083, 271805, 326166, 543610, 706693, 815415, 1413386, 1630830, 2120079, 3533465, 4240158, 7066930, 10600395, 21200790]

約数ペア:

[(1, 21200790), (2, 10600395), (3, 7066930), (5, 4240158), (6, 3533465), (10, 2120079), (13, 1630830), (15, 1413386), (26, 815415), (30, 706693), (39, 543610), (65, 326166), (78, 271805), (130, 163083), (195, 108722), (390, 54361)]