261751920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6691}}^1$

素因数の和:6870

約数の個数: 80

約数和(自身を含む): 816531072

約数和(自身を除く): 554779152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 652, 815, 978, 1304, 1630, 1956, 2445, 2608, 3260, 3912, 4890, 6520, 6691, 7824, 9780, 13040, 13382, 19560, 20073, 26764, 33455, 39120, 40146, 53528, 66910, 80292, 100365, 107056, 133820, 160584, 200730, 267640, 321168, 401460, 535280, 802920, 1090633, 1605840, 2181266, 3271899, 4362532, 5453165, 6543798, 8725064, 10906330, 13087596, 16359495, 17450128, 21812660, 26175192, 32718990, 43625320, 52350384, 65437980, 87250640, 130875960, 261751920]

約数ペア:

[(1, 261751920), (2, 130875960), (3, 87250640), (4, 65437980), (5, 52350384), (6, 43625320), (8, 32718990), (10, 26175192), (12, 21812660), (15, 17450128), (16, 16359495), (20, 13087596), (24, 10906330), (30, 8725064), (40, 6543798), (48, 5453165), (60, 4362532), (80, 3271899), (120, 2181266), (163, 1605840), (240, 1090633), (326, 802920), (489, 535280), (652, 401460), (815, 321168), (978, 267640), (1304, 200730), (1630, 160584), (1956, 133820), (2445, 107056), (2608, 100365), (3260, 80292), (3912, 66910), (4890, 53528), (6520, 40146), (6691, 39120), (7824, 33455), (9780, 26764), (13040, 20073), (13382, 19560)]