21172460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55717}}^1$

素因数の和:55745

約数の個数: 24

約数和(自身を含む): 46803120

約数和(自身を除く): 25630660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55717, 111434, 222868, 278585, 557170, 1058623, 1114340, 2117246, 4234492, 5293115, 10586230, 21172460]

約数ペア:

[(1, 21172460), (2, 10586230), (4, 5293115), (5, 4234492), (10, 2117246), (19, 1114340), (20, 1058623), (38, 557170), (76, 278585), (95, 222868), (190, 111434), (380, 55717)]