90101720

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2273}}^1$

素因数の和:3275

約数の個数: 32

約数和(自身を含む): 203022720

約数和(自身を除く): 112921000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2273, 3964, 4546, 4955, 7928, 9092, 9910, 11365, 18184, 19820, 22730, 39640, 45460, 90920, 2252543, 4505086, 9010172, 11262715, 18020344, 22525430, 45050860, 90101720]

約数ペア:

[(1, 90101720), (2, 45050860), (4, 22525430), (5, 18020344), (8, 11262715), (10, 9010172), (20, 4505086), (40, 2252543), (991, 90920), (1982, 45460), (2273, 39640), (3964, 22730), (4546, 19820), (4955, 18184), (7928, 11365), (9092, 9910)]