20992245

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1009}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 35875200

約数和(自身を除く): 14882955

約数列:

[1, 3, 5, 15, 19, 57, 73, 95, 219, 285, 365, 1009, 1095, 1387, 3027, 4161, 5045, 6935, 15135, 19171, 20805, 57513, 73657, 95855, 220971, 287565, 368285, 1104855, 1399483, 4198449, 6997415, 20992245]

約数ペア:

[(1, 20992245), (3, 6997415), (5, 4198449), (15, 1399483), (19, 1104855), (57, 368285), (73, 287565), (95, 220971), (219, 95855), (285, 73657), (365, 57513), (1009, 20805), (1095, 19171), (1387, 15135), (3027, 6935), (4161, 5045)]