21117105

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2267}}^1$

素因数の和:2307

約数の個数: 40

約数和(自身を含む): 39517632

約数和(自身を除く): 18400527

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2267, 3105, 6801, 9315, 11335, 20403, 34005, 52141, 61209, 102015, 156423, 183627, 260705, 306045, 469269, 782115, 918135, 1407807, 2346345, 4223421, 7039035, 21117105]

約数ペア:

[(1, 21117105), (3, 7039035), (5, 4223421), (9, 2346345), (15, 1407807), (23, 918135), (27, 782115), (45, 469269), (69, 306045), (81, 260705), (115, 183627), (135, 156423), (207, 102015), (345, 61209), (405, 52141), (621, 34005), (1035, 20403), (1863, 11335), (2267, 9315), (3105, 6801)]