21137410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4253}}^1$

素因数の和:4338

約数の個数: 32

約数和(自身を含む): 44105472

約数和(自身を除く): 22968062

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4253, 4970, 8506, 21265, 29771, 42530, 59542, 148855, 297710, 301963, 603926, 1509815, 2113741, 3019630, 4227482, 10568705, 21137410]

約数ペア:

[(1, 21137410), (2, 10568705), (5, 4227482), (7, 3019630), (10, 2113741), (14, 1509815), (35, 603926), (70, 301963), (71, 297710), (142, 148855), (355, 59542), (497, 42530), (710, 29771), (994, 21265), (2485, 8506), (4253, 4970)]