20989416

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1237}}^1$

素因数の和:1354

約数の個数: 64

約数和(自身を含む): 60612480

約数和(自身を除く): 39623064

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 101, 168, 202, 303, 404, 606, 707, 808, 1212, 1237, 1414, 2121, 2424, 2474, 2828, 3711, 4242, 4948, 5656, 7422, 8484, 8659, 9896, 14844, 16968, 17318, 25977, 29688, 34636, 51954, 69272, 103908, 124937, 207816, 249874, 374811, 499748, 749622, 874559, 999496, 1499244, 1749118, 2623677, 2998488, 3498236, 5247354, 6996472, 10494708, 20989416]

約数ペア:

[(1, 20989416), (2, 10494708), (3, 6996472), (4, 5247354), (6, 3498236), (7, 2998488), (8, 2623677), (12, 1749118), (14, 1499244), (21, 999496), (24, 874559), (28, 749622), (42, 499748), (56, 374811), (84, 249874), (101, 207816), (168, 124937), (202, 103908), (303, 69272), (404, 51954), (606, 34636), (707, 29688), (808, 25977), (1212, 17318), (1237, 16968), (1414, 14844), (2121, 9896), (2424, 8659), (2474, 8484), (2828, 7422), (3711, 5656), (4242, 4948)]