1281462920

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{63691}}^1$

素因数の和:64205

約数の個数: 32

約数和(自身を含む): 2889069120

約数和(自身を除く): 1607606200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 1006, 2012, 2515, 4024, 5030, 10060, 20120, 63691, 127382, 254764, 318455, 509528, 636910, 1273820, 2547640, 32036573, 64073146, 128146292, 160182865, 256292584, 320365730, 640731460, 1281462920]

約数ペア:

[(1, 1281462920), (2, 640731460), (4, 320365730), (5, 256292584), (8, 160182865), (10, 128146292), (20, 64073146), (40, 32036573), (503, 2547640), (1006, 1273820), (2012, 636910), (2515, 509528), (4024, 318455), (5030, 254764), (10060, 127382), (20120, 63691)]