20481285

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1229}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 36132480

約数和(自身を除く): 15651195

約数列:

[1, 3, 5, 11, 15, 33, 55, 101, 165, 303, 505, 1111, 1229, 1515, 3333, 3687, 5555, 6145, 13519, 16665, 18435, 40557, 67595, 124129, 202785, 372387, 620645, 1365419, 1861935, 4096257, 6827095, 20481285]

約数ペア:

[(1, 20481285), (3, 6827095), (5, 4096257), (11, 1861935), (15, 1365419), (33, 620645), (55, 372387), (101, 202785), (165, 124129), (303, 67595), (505, 40557), (1111, 18435), (1229, 16665), (1515, 13519), (3333, 6145), (3687, 5555)]