28978140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2963}}^1$

素因数の和:3138

約数の個数: 48

約数和(自身を含む): 81664128

約数和(自身を除く): 52685988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2445, 2963, 3260, 4890, 5926, 8889, 9780, 11852, 14815, 17778, 29630, 35556, 44445, 59260, 88890, 177780, 482969, 965938, 1448907, 1931876, 2414845, 2897814, 4829690, 5795628, 7244535, 9659380, 14489070, 28978140]

約数ペア:

[(1, 28978140), (2, 14489070), (3, 9659380), (4, 7244535), (5, 5795628), (6, 4829690), (10, 2897814), (12, 2414845), (15, 1931876), (20, 1448907), (30, 965938), (60, 482969), (163, 177780), (326, 88890), (489, 59260), (652, 44445), (815, 35556), (978, 29630), (1630, 17778), (1956, 14815), (2445, 11852), (2963, 9780), (3260, 8889), (4890, 5926)]