20904870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14221}}^1$

素因数の和:14245

約数の個数: 48

約数和(自身を含む): 58367088

約数和(自身を除く): 37462218

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14221, 28442, 42663, 71105, 85326, 99547, 142210, 199094, 213315, 298641, 426630, 497735, 597282, 696829, 995470, 1393658, 1493205, 2090487, 2986410, 3484145, 4180974, 6968290, 10452435, 20904870]

約数ペア:

[(1, 20904870), (2, 10452435), (3, 6968290), (5, 4180974), (6, 3484145), (7, 2986410), (10, 2090487), (14, 1493205), (15, 1393658), (21, 995470), (30, 696829), (35, 597282), (42, 497735), (49, 426630), (70, 298641), (98, 213315), (105, 199094), (147, 142210), (210, 99547), (245, 85326), (294, 71105), (490, 42663), (735, 28442), (1470, 14221)]