19994465

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 24

約数和(自身を含む): 25927992

約数和(自身を除く): 5933527

約数列:

[1, 5, 17, 85, 101, 137, 289, 505, 685, 1445, 1717, 2329, 8585, 11645, 13837, 29189, 39593, 69185, 145945, 197965, 235229, 1176145, 3998893, 19994465]

約数ペア:

[(1, 19994465), (5, 3998893), (17, 1176145), (85, 235229), (101, 197965), (137, 145945), (289, 69185), (505, 39593), (685, 29189), (1445, 13837), (1717, 11645), (2329, 8585)]