20197772

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 42792960

約数和(自身を除く): 22595188

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 79, 92, 158, 161, 316, 322, 397, 553, 644, 794, 1106, 1588, 1817, 2212, 2779, 3634, 5558, 7268, 9131, 11116, 12719, 18262, 25438, 31363, 36524, 50876, 62726, 63917, 125452, 127834, 219541, 255668, 439082, 721349, 878164, 1442698, 2885396, 5049443, 10098886, 20197772]

約数ペア:

[(1, 20197772), (2, 10098886), (4, 5049443), (7, 2885396), (14, 1442698), (23, 878164), (28, 721349), (46, 439082), (79, 255668), (92, 219541), (158, 127834), (161, 125452), (316, 63917), (322, 62726), (397, 50876), (553, 36524), (644, 31363), (794, 25438), (1106, 18262), (1588, 12719), (1817, 11116), (2212, 9131), (2779, 7268), (3634, 5558)]