20500020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37963}}^1$

素因数の和:37981

約数の個数: 48

約数和(自身を含む): 63779520

約数和(自身を除く): 43279500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37963, 75926, 113889, 151852, 189815, 227778, 341667, 379630, 455556, 569445, 683334, 759260, 1025001, 1138890, 1366668, 1708335, 2050002, 2277780, 3416670, 4100004, 5125005, 6833340, 10250010, 20500020]

約数ペア:

[(1, 20500020), (2, 10250010), (3, 6833340), (4, 5125005), (5, 4100004), (6, 3416670), (9, 2277780), (10, 2050002), (12, 1708335), (15, 1366668), (18, 1138890), (20, 1025001), (27, 759260), (30, 683334), (36, 569445), (45, 455556), (54, 379630), (60, 341667), (90, 227778), (108, 189815), (135, 151852), (180, 113889), (270, 75926), (540, 37963)]