28903420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15881}}^1$

素因数の和:15910

約数の個数: 48

約数和(自身を含む): 74708928

約数和(自身を除く): 45805508

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15881, 31762, 63524, 79405, 111167, 158810, 206453, 222334, 317620, 412906, 444668, 555835, 825812, 1032265, 1111670, 1445171, 2064530, 2223340, 2890342, 4129060, 5780684, 7225855, 14451710, 28903420]

約数ペア:

[(1, 28903420), (2, 14451710), (4, 7225855), (5, 5780684), (7, 4129060), (10, 2890342), (13, 2223340), (14, 2064530), (20, 1445171), (26, 1111670), (28, 1032265), (35, 825812), (52, 555835), (65, 444668), (70, 412906), (91, 317620), (130, 222334), (140, 206453), (182, 158810), (260, 111167), (364, 79405), (455, 63524), (910, 31762), (1820, 15881)]