19747917

素因数分解:

$3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1877}}^1$

素因数の和:2057

約数の個数: 24

約数和(自身を含む): 32812416

約数和(自身を除く): 13064499

約数列:

[1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 1877, 3507, 5631, 10521, 13139, 16893, 39417, 118251, 313459, 940377, 2194213, 2821131, 6582639, 19747917]

約数ペア:

[(1, 19747917), (3, 6582639), (7, 2821131), (9, 2194213), (21, 940377), (63, 313459), (167, 118251), (501, 39417), (1169, 16893), (1503, 13139), (1877, 10521), (3507, 5631)]