19903430

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 38991456

約数和(自身を除く): 19088026

約数列:

[1, 2, 5, 10, 17, 34, 71, 85, 97, 142, 170, 194, 289, 355, 485, 578, 710, 970, 1207, 1445, 1649, 2414, 2890, 3298, 6035, 6887, 8245, 12070, 13774, 16490, 20519, 28033, 34435, 41038, 56066, 68870, 102595, 117079, 140165, 205190, 234158, 280330, 585395, 1170790, 1990343, 3980686, 9951715, 19903430]

約数ペア:

[(1, 19903430), (2, 9951715), (5, 3980686), (10, 1990343), (17, 1170790), (34, 585395), (71, 280330), (85, 234158), (97, 205190), (142, 140165), (170, 117079), (194, 102595), (289, 68870), (355, 56066), (485, 41038), (578, 34435), (710, 28033), (970, 20519), (1207, 16490), (1445, 13774), (1649, 12070), (2414, 8245), (2890, 6887), (3298, 6035)]