391309820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1201}}^1\times {\mathrm{1481}}^1$

素因数の和:2702

約数の個数: 48

約数和(自身を含む): 897807456

約数和(自身を除く): 506497636

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1201, 1481, 2402, 2962, 4804, 5924, 6005, 7405, 12010, 13211, 14810, 16291, 24020, 26422, 29620, 32582, 52844, 65164, 66055, 81455, 132110, 162910, 264220, 325820, 1778681, 3557362, 7114724, 8893405, 17786810, 19565491, 35573620, 39130982, 78261964, 97827455, 195654910, 391309820]

約数ペア:

[(1, 391309820), (2, 195654910), (4, 97827455), (5, 78261964), (10, 39130982), (11, 35573620), (20, 19565491), (22, 17786810), (44, 8893405), (55, 7114724), (110, 3557362), (220, 1778681), (1201, 325820), (1481, 264220), (2402, 162910), (2962, 132110), (4804, 81455), (5924, 66055), (6005, 65164), (7405, 52844), (12010, 32582), (13211, 29620), (14810, 26422), (16291, 24020)]