12390320

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2539}}^1$

素因数の和:2613

約数の個数: 40

約数和(自身を含む): 29291280

約数和(自身を除く): 16900960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 2539, 4880, 5078, 10156, 12695, 20312, 25390, 40624, 50780, 101560, 154879, 203120, 309758, 619516, 774395, 1239032, 1548790, 2478064, 3097580, 6195160, 12390320]

約数ペア:

[(1, 12390320), (2, 6195160), (4, 3097580), (5, 2478064), (8, 1548790), (10, 1239032), (16, 774395), (20, 619516), (40, 309758), (61, 203120), (80, 154879), (122, 101560), (244, 50780), (305, 40624), (488, 25390), (610, 20312), (976, 12695), (1220, 10156), (2440, 5078), (2539, 4880)]