19865870

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1123}}^1$

素因数の和:1220

約数の個数: 32

約数和(自身を含む): 37631520

約数和(自身を除く): 17765650

約数列:

[1, 2, 5, 10, 29, 58, 61, 122, 145, 290, 305, 610, 1123, 1769, 2246, 3538, 5615, 8845, 11230, 17690, 32567, 65134, 68503, 137006, 162835, 325670, 342515, 685030, 1986587, 3973174, 9932935, 19865870]

約数ペア:

[(1, 19865870), (2, 9932935), (5, 3973174), (10, 1986587), (29, 685030), (58, 342515), (61, 325670), (122, 162835), (145, 137006), (290, 68503), (305, 65134), (610, 32567), (1123, 17690), (1769, 11230), (2246, 8845), (3538, 5615)]