21197835

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6827}}^1$

素因数の和:6864

約数の個数: 32

約数和(自身を含む): 39329280

約数和(自身を除く): 18131445

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6827, 20481, 34135, 61443, 102405, 157021, 184329, 307215, 471063, 785105, 921645, 1413189, 2355315, 4239567, 7065945, 21197835]

約数ペア:

[(1, 21197835), (3, 7065945), (5, 4239567), (9, 2355315), (15, 1413189), (23, 921645), (27, 785105), (45, 471063), (69, 307215), (115, 184329), (135, 157021), (207, 102405), (345, 61443), (621, 34135), (1035, 20481), (3105, 6827)]