123215280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{513397}}^1$

素因数の和:513413

約数の個数: 40

約数和(自身を含む): 381968112

約数和(自身を除く): 258752832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 513397, 1026794, 1540191, 2053588, 2566985, 3080382, 4107176, 5133970, 6160764, 7700955, 8214352, 10267940, 12321528, 15401910, 20535880, 24643056, 30803820, 41071760, 61607640, 123215280]

約数ペア:

[(1, 123215280), (2, 61607640), (3, 41071760), (4, 30803820), (5, 24643056), (6, 20535880), (8, 15401910), (10, 12321528), (12, 10267940), (15, 8214352), (16, 7700955), (20, 6160764), (24, 5133970), (30, 4107176), (40, 3080382), (48, 2566985), (60, 2053588), (80, 1540191), (120, 1026794), (240, 513397)]