21999505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7547}}^1$

素因数の和:7616

約数の個数: 16

約数和(自身を含む): 29346624

約数和(自身を除く): 7347119

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7547, 37735, 83017, 399991, 415085, 1999955, 4399901, 21999505]

約数ペア:

[(1, 21999505), (5, 4399901), (11, 1999955), (53, 415085), (55, 399991), (265, 83017), (583, 37735), (2915, 7547)]