21746907

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 18895653

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 53, 63, 91, 117, 159, 167, 189, 273, 351, 371, 477, 501, 689, 819, 1113, 1169, 1431, 1503, 2067, 2171, 2457, 3339, 3507, 4509, 4823, 6201, 6513, 8851, 10017, 10521, 14469, 15197, 18603, 19539, 26553, 31563, 43407, 45591, 58617, 61957, 79659, 115063, 130221, 136773, 185871, 238977, 345189, 410319, 557613, 805441, 1035567, 1672839, 2416323, 3106701, 7248969, 21746907]

約数ペア:

[(1, 21746907), (3, 7248969), (7, 3106701), (9, 2416323), (13, 1672839), (21, 1035567), (27, 805441), (39, 557613), (53, 410319), (63, 345189), (91, 238977), (117, 185871), (159, 136773), (167, 130221), (189, 115063), (273, 79659), (351, 61957), (371, 58617), (477, 45591), (501, 43407), (689, 31563), (819, 26553), (1113, 19539), (1169, 18603), (1431, 15197), (1503, 14469), (2067, 10521), (2171, 10017), (2457, 8851), (3339, 6513), (3507, 6201), (4509, 4823)]