18709281

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 30551040

約数和(自身を除く): 11841759

約数列:

[1, 3, 9, 19, 23, 57, 67, 69, 71, 171, 201, 207, 213, 437, 603, 639, 1273, 1311, 1349, 1541, 1633, 3819, 3933, 4047, 4623, 4757, 4899, 11457, 12141, 13869, 14271, 14697, 29279, 31027, 42813, 87837, 90383, 93081, 109411, 263511, 271149, 279243, 328233, 813447, 984699, 2078809, 6236427, 18709281]

約数ペア:

[(1, 18709281), (3, 6236427), (9, 2078809), (19, 984699), (23, 813447), (57, 328233), (67, 279243), (69, 271149), (71, 263511), (171, 109411), (201, 93081), (207, 90383), (213, 87837), (437, 42813), (603, 31027), (639, 29279), (1273, 14697), (1311, 14271), (1349, 13869), (1541, 12141), (1633, 11457), (3819, 4899), (3933, 4757), (4047, 4623)]