21764950

素因数分解:

$2^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 42117840

約数和(自身を除く): 20352890

約数列:

[1, 2, 5, 10, 25, 50, 67, 73, 89, 134, 146, 178, 335, 365, 445, 670, 730, 890, 1675, 1825, 2225, 3350, 3650, 4450, 4891, 5963, 6497, 9782, 11926, 12994, 24455, 29815, 32485, 48910, 59630, 64970, 122275, 149075, 162425, 244550, 298150, 324850, 435299, 870598, 2176495, 4352990, 10882475, 21764950]

約数ペア:

[(1, 21764950), (2, 10882475), (5, 4352990), (10, 2176495), (25, 870598), (50, 435299), (67, 324850), (73, 298150), (89, 244550), (134, 162425), (146, 149075), (178, 122275), (335, 64970), (365, 59630), (445, 48910), (670, 32485), (730, 29815), (890, 24455), (1675, 12994), (1825, 11926), (2225, 9782), (3350, 6497), (3650, 5963), (4450, 4891)]