21900340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{14221}}^1$

素因数の和:14248

約数の個数: 48

約数和(自身を含む): 57343104

約数和(自身を除く): 35442764

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 14221, 28442, 56884, 71105, 99547, 142210, 156431, 199094, 284420, 312862, 398188, 497735, 625724, 782155, 995470, 1095017, 1564310, 1990940, 2190034, 3128620, 4380068, 5475085, 10950170, 21900340]

約数ペア:

[(1, 21900340), (2, 10950170), (4, 5475085), (5, 4380068), (7, 3128620), (10, 2190034), (11, 1990940), (14, 1564310), (20, 1095017), (22, 995470), (28, 782155), (35, 625724), (44, 497735), (55, 398188), (70, 312862), (77, 284420), (110, 199094), (140, 156431), (154, 142210), (220, 99547), (308, 71105), (385, 56884), (770, 28442), (1540, 14221)]