21902860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1549}}^1$

素因数の和:1666

約数の個数: 48

約数和(自身を含む): 53121600

約数和(自身を除く): 31218740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 1549, 2020, 2828, 3098, 3535, 6196, 7070, 7745, 10843, 14140, 15490, 21686, 30980, 43372, 54215, 108430, 156449, 216860, 312898, 625796, 782245, 1095143, 1564490, 2190286, 3128980, 4380572, 5475715, 10951430, 21902860]

約数ペア:

[(1, 21902860), (2, 10951430), (4, 5475715), (5, 4380572), (7, 3128980), (10, 2190286), (14, 1564490), (20, 1095143), (28, 782245), (35, 625796), (70, 312898), (101, 216860), (140, 156449), (202, 108430), (404, 54215), (505, 43372), (707, 30980), (1010, 21686), (1414, 15490), (1549, 14140), (2020, 10843), (2828, 7745), (3098, 7070), (3535, 6196)]