20219553

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 33022080

約数和(自身を除く): 12802527

約数列:

[1, 3, 9, 19, 23, 53, 57, 69, 97, 159, 171, 207, 291, 437, 477, 873, 1007, 1219, 1311, 1843, 2231, 3021, 3657, 3933, 5141, 5529, 6693, 9063, 10971, 15423, 16587, 20079, 23161, 42389, 46269, 69483, 97679, 118243, 127167, 208449, 293037, 354729, 381501, 879111, 1064187, 2246617, 6739851, 20219553]

約数ペア:

[(1, 20219553), (3, 6739851), (9, 2246617), (19, 1064187), (23, 879111), (53, 381501), (57, 354729), (69, 293037), (97, 208449), (159, 127167), (171, 118243), (207, 97679), (291, 69483), (437, 46269), (477, 42389), (873, 23161), (1007, 20079), (1219, 16587), (1311, 15423), (1843, 10971), (2231, 9063), (3021, 6693), (3657, 5529), (3933, 5141)]