420728931

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71809}}^1$

素因数の和:71856

約数の個数: 32

約数和(自身を含む): 735334400

約数和(自身を除く): 314605469

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 5859, 71809, 215427, 502663, 646281, 1507989, 1938843, 2226079, 4523967, 6678237, 13571901, 15582553, 20034711, 46747659, 60104133, 140242977, 420728931]

約数ペア:

[(1, 420728931), (3, 140242977), (7, 60104133), (9, 46747659), (21, 20034711), (27, 15582553), (31, 13571901), (63, 6678237), (93, 4523967), (189, 2226079), (217, 1938843), (279, 1507989), (651, 646281), (837, 502663), (1953, 215427), (5859, 71809)]