20802830

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 38702880

約数和(自身を除く): 17900050

約数列:

[1, 2, 5, 10, 61, 67, 122, 134, 305, 335, 509, 610, 670, 1018, 2545, 4087, 5090, 8174, 20435, 31049, 34103, 40870, 62098, 68206, 155245, 170515, 310490, 341030, 2080283, 4160566, 10401415, 20802830]

約数ペア:

[(1, 20802830), (2, 10401415), (5, 4160566), (10, 2080283), (61, 341030), (67, 310490), (122, 170515), (134, 155245), (305, 68206), (335, 62098), (509, 40870), (610, 34103), (670, 31049), (1018, 20435), (2545, 8174), (4087, 5090)]