19977578

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 12923542

約数列:

[1, 2, 29, 31, 41, 58, 62, 82, 271, 542, 899, 1189, 1271, 1798, 2378, 2542, 7859, 8401, 11111, 15718, 16802, 22222, 36859, 73718, 243629, 322219, 344441, 487258, 644438, 688882, 9988789, 19977578]

約数ペア:

[(1, 19977578), (2, 9988789), (29, 688882), (31, 644438), (41, 487258), (58, 344441), (62, 322219), (82, 243629), (271, 73718), (542, 36859), (899, 22222), (1189, 16802), (1271, 15718), (1798, 11111), (2378, 8401), (2542, 7859)]