215519913

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1153}}^1$

素因数の和:1235

約数の個数: 64

約数和(自身を含む): 389959680

約数和(自身を除く): 174439767

約数列:

[1, 3, 7, 9, 21, 23, 27, 43, 63, 69, 129, 161, 189, 207, 301, 387, 483, 621, 903, 989, 1153, 1161, 1449, 2709, 2967, 3459, 4347, 6923, 8071, 8127, 8901, 10377, 20769, 24213, 26519, 26703, 31131, 49579, 62307, 72639, 79557, 148737, 185633, 186921, 217917, 238671, 347053, 446211, 556899, 716013, 1041159, 1140317, 1338633, 1670697, 3123477, 3420951, 5012091, 7982219, 9370431, 10262853, 23946657, 30788559, 71839971, 215519913]

約数ペア:

[(1, 215519913), (3, 71839971), (7, 30788559), (9, 23946657), (21, 10262853), (23, 9370431), (27, 7982219), (43, 5012091), (63, 3420951), (69, 3123477), (129, 1670697), (161, 1338633), (189, 1140317), (207, 1041159), (301, 716013), (387, 556899), (483, 446211), (621, 347053), (903, 238671), (989, 217917), (1153, 186921), (1161, 185633), (1449, 148737), (2709, 79557), (2967, 72639), (3459, 62307), (4347, 49579), (6923, 31131), (8071, 26703), (8127, 26519), (8901, 24213), (10377, 20769)]