18980949

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 28344960

約数和(自身を除く): 9364011

約数列:

[1, 3, 13, 39, 59, 73, 113, 177, 219, 339, 767, 949, 1469, 2301, 2847, 4307, 4407, 6667, 8249, 12921, 20001, 24747, 55991, 86671, 107237, 167973, 260013, 321711, 486691, 1460073, 6326983, 18980949]

約数ペア:

[(1, 18980949), (3, 6326983), (13, 1460073), (39, 486691), (59, 321711), (73, 260013), (113, 167973), (177, 107237), (219, 86671), (339, 55991), (767, 24747), (949, 20001), (1469, 12921), (2301, 8249), (2847, 6667), (4307, 4407)]