20642590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3917}}^1$

素因数の和:3972

約数の個数: 32

約数和(自身を含む): 40621824

約数和(自身を除く): 19979234

約数列:

[1, 2, 5, 10, 17, 31, 34, 62, 85, 155, 170, 310, 527, 1054, 2635, 3917, 5270, 7834, 19585, 39170, 66589, 121427, 133178, 242854, 332945, 607135, 665890, 1214270, 2064259, 4128518, 10321295, 20642590]

約数ペア:

[(1, 20642590), (2, 10321295), (5, 4128518), (10, 2064259), (17, 1214270), (31, 665890), (34, 607135), (62, 332945), (85, 242854), (155, 133178), (170, 121427), (310, 66589), (527, 39170), (1054, 19585), (2635, 7834), (3917, 5270)]