21845421

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 37040640

約数和(自身を除く): 15195219

約数列:

[1, 3, 9, 13, 19, 31, 39, 57, 93, 117, 171, 247, 279, 317, 403, 589, 741, 951, 1209, 1767, 2223, 2853, 3627, 4121, 5301, 6023, 7657, 9827, 12363, 18069, 22971, 29481, 37089, 54207, 68913, 78299, 88443, 127751, 186713, 234897, 383253, 560139, 704691, 1149759, 1680417, 2427269, 7281807, 21845421]

約数ペア:

[(1, 21845421), (3, 7281807), (9, 2427269), (13, 1680417), (19, 1149759), (31, 704691), (39, 560139), (57, 383253), (93, 234897), (117, 186713), (171, 127751), (247, 88443), (279, 78299), (317, 68913), (403, 54207), (589, 37089), (741, 29481), (951, 22971), (1209, 18069), (1767, 12363), (2223, 9827), (2853, 7657), (3627, 6023), (4121, 5301)]