21704060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22147}}^1$

素因数の和:22170

約数の個数: 36

約数和(自身を含む): 53022312

約数和(自身を除く): 31318252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22147, 44294, 88588, 110735, 155029, 221470, 310058, 442940, 620116, 775145, 1085203, 1550290, 2170406, 3100580, 4340812, 5426015, 10852030, 21704060]

約数ペア:

[(1, 21704060), (2, 10852030), (4, 5426015), (5, 4340812), (7, 3100580), (10, 2170406), (14, 1550290), (20, 1085203), (28, 775145), (35, 620116), (49, 442940), (70, 310058), (98, 221470), (140, 155029), (196, 110735), (245, 88588), (490, 44294), (980, 22147)]