21435885

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 17876115

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 139, 149, 207, 345, 417, 447, 695, 745, 1035, 1251, 1341, 2085, 2235, 3197, 3427, 6255, 6705, 9591, 10281, 15985, 17135, 20711, 28773, 30843, 47955, 51405, 62133, 103555, 143865, 154215, 186399, 310665, 476353, 931995, 1429059, 2381765, 4287177, 7145295, 21435885]

約数ペア:

[(1, 21435885), (3, 7145295), (5, 4287177), (9, 2381765), (15, 1429059), (23, 931995), (45, 476353), (69, 310665), (115, 186399), (139, 154215), (149, 143865), (207, 103555), (345, 62133), (417, 51405), (447, 47955), (695, 30843), (745, 28773), (1035, 20711), (1251, 17135), (1341, 15985), (2085, 10281), (2235, 9591), (3197, 6705), (3427, 6255)]