618975981

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{401}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 983324160

約数和(自身を除く): 364348179

約数列:

[1, 3, 9, 13, 39, 79, 117, 167, 237, 401, 501, 711, 1027, 1203, 1503, 2171, 3081, 3609, 5213, 6513, 9243, 13193, 15639, 19539, 31679, 39579, 46917, 66967, 95037, 118737, 171509, 200901, 285111, 411827, 514527, 602703, 870571, 1235481, 1543581, 2611713, 3706443, 5290393, 7835139, 15871179, 47613537, 68775109, 206325327, 618975981]

約数ペア:

[(1, 618975981), (3, 206325327), (9, 68775109), (13, 47613537), (39, 15871179), (79, 7835139), (117, 5290393), (167, 3706443), (237, 2611713), (401, 1543581), (501, 1235481), (711, 870571), (1027, 602703), (1203, 514527), (1503, 411827), (2171, 285111), (3081, 200901), (3609, 171509), (5213, 118737), (6513, 95037), (9243, 66967), (13193, 46917), (15639, 39579), (19539, 31679)]