20115540

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4139}}^1$

素因数の和:4163

約数の個数: 72

約数和(自身を含む): 63292320

約数和(自身を除く): 43176780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4139, 4860, 8278, 12417, 16556, 20695, 24834, 37251, 41390, 49668, 62085, 74502, 82780, 111753, 124170, 149004, 186255, 223506, 248340, 335259, 372510, 447012, 558765, 670518, 745020, 1005777, 1117530, 1341036, 1676295, 2011554, 2235060, 3352590, 4023108, 5028885, 6705180, 10057770, 20115540]

約数ペア:

[(1, 20115540), (2, 10057770), (3, 6705180), (4, 5028885), (5, 4023108), (6, 3352590), (9, 2235060), (10, 2011554), (12, 1676295), (15, 1341036), (18, 1117530), (20, 1005777), (27, 745020), (30, 670518), (36, 558765), (45, 447012), (54, 372510), (60, 335259), (81, 248340), (90, 223506), (108, 186255), (135, 149004), (162, 124170), (180, 111753), (243, 82780), (270, 74502), (324, 62085), (405, 49668), (486, 41390), (540, 37251), (810, 24834), (972, 20695), (1215, 16556), (1620, 12417), (2430, 8278), (4139, 4860)]