12205820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 28274400

約数和(自身を除く): 16068580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 509, 545, 1018, 1090, 1199, 2036, 2180, 2398, 2545, 4796, 5090, 5599, 5995, 10180, 11198, 11990, 22396, 23980, 27995, 55481, 55990, 110962, 111980, 221924, 277405, 554810, 610291, 1109620, 1220582, 2441164, 3051455, 6102910, 12205820]

約数ペア:

[(1, 12205820), (2, 6102910), (4, 3051455), (5, 2441164), (10, 1220582), (11, 1109620), (20, 610291), (22, 554810), (44, 277405), (55, 221924), (109, 111980), (110, 110962), (218, 55990), (220, 55481), (436, 27995), (509, 23980), (545, 22396), (1018, 11990), (1090, 11198), (1199, 10180), (2036, 5995), (2180, 5599), (2398, 5090), (2545, 4796)]