13250320

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1861}}^1$

素因数の和:1963

約数の個数: 40

約数和(自身を含む): 31169880

約数和(自身を除く): 17919560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 1861, 3560, 3722, 7120, 7444, 9305, 14888, 18610, 29776, 37220, 74440, 148880, 165629, 331258, 662516, 828145, 1325032, 1656290, 2650064, 3312580, 6625160, 13250320]

約数ペア:

[(1, 13250320), (2, 6625160), (4, 3312580), (5, 2650064), (8, 1656290), (10, 1325032), (16, 828145), (20, 662516), (40, 331258), (80, 165629), (89, 148880), (178, 74440), (356, 37220), (445, 29776), (712, 18610), (890, 14888), (1424, 9305), (1780, 7444), (1861, 7120), (3560, 3722)]