20213970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{13751}}^1$

素因数の和:13775

約数の個数: 48

約数和(自身を含む): 56438208

約数和(自身を除く): 36224238

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, 13751, 27502, 41253, 68755, 82506, 96257, 137510, 192514, 206265, 288771, 412530, 481285, 577542, 673799, 962570, 1347598, 1443855, 2021397, 2887710, 3368995, 4042794, 6737990, 10106985, 20213970]

約数ペア:

[(1, 20213970), (2, 10106985), (3, 6737990), (5, 4042794), (6, 3368995), (7, 2887710), (10, 2021397), (14, 1443855), (15, 1347598), (21, 962570), (30, 673799), (35, 577542), (42, 481285), (49, 412530), (70, 288771), (98, 206265), (105, 192514), (147, 137510), (210, 96257), (245, 82506), (294, 68755), (490, 41253), (735, 27502), (1470, 13751)]