21948780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52259}}^1$

素因数の和:52278

約数の個数: 48

約数和(自身を含む): 70237440

約数和(自身を除く): 48288660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 52259, 104518, 156777, 209036, 261295, 313554, 365813, 522590, 627108, 731626, 783885, 1045180, 1097439, 1463252, 1567770, 1829065, 2194878, 3135540, 3658130, 4389756, 5487195, 7316260, 10974390, 21948780]

約数ペア:

[(1, 21948780), (2, 10974390), (3, 7316260), (4, 5487195), (5, 4389756), (6, 3658130), (7, 3135540), (10, 2194878), (12, 1829065), (14, 1567770), (15, 1463252), (20, 1097439), (21, 1045180), (28, 783885), (30, 731626), (35, 627108), (42, 522590), (60, 365813), (70, 313554), (84, 261295), (105, 209036), (140, 156777), (210, 104518), (420, 52259)]