21648410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 48142080

約数和(自身を除く): 26493670

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 41, 70, 82, 95, 133, 190, 205, 266, 287, 397, 410, 574, 665, 779, 794, 1330, 1435, 1558, 1985, 2779, 2870, 3895, 3970, 5453, 5558, 7543, 7790, 10906, 13895, 15086, 16277, 27265, 27790, 32554, 37715, 52801, 54530, 75430, 81385, 105602, 113939, 162770, 227878, 264005, 309263, 528010, 569695, 618526, 1139390, 1546315, 2164841, 3092630, 4329682, 10824205, 21648410]

約数ペア:

[(1, 21648410), (2, 10824205), (5, 4329682), (7, 3092630), (10, 2164841), (14, 1546315), (19, 1139390), (35, 618526), (38, 569695), (41, 528010), (70, 309263), (82, 264005), (95, 227878), (133, 162770), (190, 113939), (205, 105602), (266, 81385), (287, 75430), (397, 54530), (410, 52801), (574, 37715), (665, 32554), (779, 27790), (794, 27265), (1330, 16277), (1435, 15086), (1558, 13895), (1985, 10906), (2779, 7790), (2870, 7543), (3895, 5558), (3970, 5453)]