21998115

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3467}}^1$

素因数の和:3528

約数の個数: 32

約数和(自身を含む): 39951360

約数和(自身を除く): 17953245

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 135, 141, 235, 423, 705, 1269, 2115, 3467, 6345, 10401, 17335, 31203, 52005, 93609, 156015, 162949, 468045, 488847, 814745, 1466541, 2444235, 4399623, 7332705, 21998115]

約数ペア:

[(1, 21998115), (3, 7332705), (5, 4399623), (9, 2444235), (15, 1466541), (27, 814745), (45, 488847), (47, 468045), (135, 162949), (141, 156015), (235, 93609), (423, 52005), (705, 31203), (1269, 17335), (2115, 10401), (3467, 6345)]