20509240

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2239}}^1$

素因数の和:2479

約数の個数: 32

約数和(自身を含む): 46368000

約数和(自身を除く): 25858760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2239, 2290, 4478, 4580, 8956, 9160, 11195, 17912, 22390, 44780, 89560, 512731, 1025462, 2050924, 2563655, 4101848, 5127310, 10254620, 20509240]

約数ペア:

[(1, 20509240), (2, 10254620), (4, 5127310), (5, 4101848), (8, 2563655), (10, 2050924), (20, 1025462), (40, 512731), (229, 89560), (458, 44780), (916, 22390), (1145, 17912), (1832, 11195), (2239, 9160), (2290, 8956), (4478, 4580)]