19991403

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{167}}^1\times {\mathrm{283}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 29772288

約数和(自身を除く): 9780885

約数列:

[1, 3, 9, 47, 141, 167, 283, 423, 501, 849, 1503, 2547, 7849, 13301, 23547, 39903, 47261, 70641, 119709, 141783, 425349, 2221267, 6663801, 19991403]

約数ペア:

[(1, 19991403), (3, 6663801), (9, 2221267), (47, 425349), (141, 141783), (167, 119709), (283, 70641), (423, 47261), (501, 39903), (849, 23547), (1503, 13301), (2547, 7849)]