21060740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2917}}^1$

素因数の和:2964

約数の個数: 36

約数和(自身を含む): 46693836

約数和(自身を除く): 25633096

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2917, 3610, 5834, 7220, 11668, 14585, 29170, 55423, 58340, 110846, 221692, 277115, 554230, 1053037, 1108460, 2106074, 4212148, 5265185, 10530370, 21060740]

約数ペア:

[(1, 21060740), (2, 10530370), (4, 5265185), (5, 4212148), (10, 2106074), (19, 1108460), (20, 1053037), (38, 554230), (76, 277115), (95, 221692), (190, 110846), (361, 58340), (380, 55423), (722, 29170), (1444, 14585), (1805, 11668), (2917, 7220), (3610, 5834)]