21000687176

素因数分解:

$2^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1\times {\mathrm{8669}}^1$

素因数の和:9102

約数の個数: 64

約数和(自身を含む): 45444672000

約数和(自身を除く): 24443984824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 181, 239, 362, 478, 724, 956, 1267, 1448, 1673, 1912, 2534, 3346, 5068, 6692, 8669, 10136, 13384, 17338, 34676, 43259, 60683, 69352, 86518, 121366, 173036, 242732, 302813, 346072, 485464, 605626, 1211252, 1569089, 2071891, 2422504, 3138178, 4143782, 6276356, 8287564, 10983623, 12552712, 14503237, 16575128, 21967246, 29006474, 43934492, 58012948, 87868984, 116025896, 375012271, 750024542, 1500049084, 2625085897, 3000098168, 5250171794, 10500343588, 21000687176]

約数ペア:

[(1, 21000687176), (2, 10500343588), (4, 5250171794), (7, 3000098168), (8, 2625085897), (14, 1500049084), (28, 750024542), (56, 375012271), (181, 116025896), (239, 87868984), (362, 58012948), (478, 43934492), (724, 29006474), (956, 21967246), (1267, 16575128), (1448, 14503237), (1673, 12552712), (1912, 10983623), (2534, 8287564), (3346, 6276356), (5068, 4143782), (6692, 3138178), (8669, 2422504), (10136, 2071891), (13384, 1569089), (17338, 1211252), (34676, 605626), (43259, 485464), (60683, 346072), (69352, 302813), (86518, 242732), (121366, 173036)]