639991495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{1823}}^1$

素因数の和:2343

約数の個数: 32

約数和(自身を含む): 904587264

約数和(自身を除く): 264595769

約数列:

[1, 5, 11, 13, 55, 65, 143, 491, 715, 1823, 2455, 5401, 6383, 9115, 20053, 23699, 27005, 31915, 70213, 100265, 118495, 260689, 351065, 895093, 1303445, 4475465, 9846023, 11636209, 49230115, 58181045, 127998299, 639991495]

約数ペア:

[(1, 639991495), (5, 127998299), (11, 58181045), (13, 49230115), (55, 11636209), (65, 9846023), (143, 4475465), (491, 1303445), (715, 895093), (1823, 351065), (2455, 260689), (5401, 118495), (6383, 100265), (9115, 70213), (20053, 31915), (23699, 27005)]