21289443

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{233}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 34444800

約数和(自身を除く): 13155357

約数列:

[1, 3, 7, 19, 21, 57, 133, 229, 233, 399, 687, 699, 1603, 1631, 4351, 4427, 4809, 4893, 13053, 13281, 30457, 30989, 53357, 91371, 92967, 160071, 373499, 1013783, 1120497, 3041349, 7096481, 21289443]

約数ペア:

[(1, 21289443), (3, 7096481), (7, 3041349), (19, 1120497), (21, 1013783), (57, 373499), (133, 160071), (229, 92967), (233, 91371), (399, 53357), (687, 30989), (699, 30457), (1603, 13281), (1631, 13053), (4351, 4893), (4427, 4809)]