21000663519

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4051}}^1\times {\mathrm{5417}}^1$

素因数の和:9511

約数の個数: 32

約数和(自身を含む): 31613379840

約数和(自身を除く): 10612716321

約数列:

[1, 3, 11, 29, 33, 87, 319, 957, 4051, 5417, 12153, 16251, 44561, 59587, 117479, 133683, 157093, 178761, 352437, 471279, 1292269, 1728023, 3876807, 5184069, 21944267, 65832801, 241386937, 636383743, 724160811, 1909151229, 7000221173, 21000663519]

約数ペア:

[(1, 21000663519), (3, 7000221173), (11, 1909151229), (29, 724160811), (33, 636383743), (87, 241386937), (319, 65832801), (957, 21944267), (4051, 5184069), (5417, 3876807), (12153, 1728023), (16251, 1292269), (44561, 471279), (59587, 352437), (117479, 178761), (133683, 157093)]