18794979

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 35212320

約数和(自身を除く): 16417341

約数列:

[1, 3, 7, 9, 17, 21, 23, 49, 51, 63, 69, 109, 119, 147, 153, 161, 207, 327, 357, 391, 441, 483, 763, 833, 981, 1071, 1127, 1173, 1449, 1853, 2289, 2499, 2507, 2737, 3381, 3519, 5341, 5559, 6867, 7497, 7521, 8211, 10143, 12971, 16023, 16677, 17549, 19159, 22563, 24633, 38913, 42619, 48069, 52647, 57477, 90797, 116739, 122843, 127857, 157941, 172431, 272391, 298333, 368529, 383571, 817173, 894999, 1105587, 2088331, 2684997, 6264993, 18794979]

約数ペア:

[(1, 18794979), (3, 6264993), (7, 2684997), (9, 2088331), (17, 1105587), (21, 894999), (23, 817173), (49, 383571), (51, 368529), (63, 298333), (69, 272391), (109, 172431), (119, 157941), (147, 127857), (153, 122843), (161, 116739), (207, 90797), (327, 57477), (357, 52647), (391, 48069), (441, 42619), (483, 38913), (763, 24633), (833, 22563), (981, 19159), (1071, 17549), (1127, 16677), (1173, 16023), (1449, 12971), (1853, 10143), (2289, 8211), (2499, 7521), (2507, 7497), (2737, 6867), (3381, 5559), (3519, 5341)]