81512690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 176546304

約数和(自身を除く): 95033614

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 197, 230, 257, 322, 394, 514, 805, 985, 1285, 1379, 1610, 1799, 1970, 2570, 2758, 3598, 4531, 5911, 6895, 8995, 9062, 11822, 13790, 17990, 22655, 29555, 31717, 41377, 45310, 50629, 59110, 63434, 82754, 101258, 158585, 206885, 253145, 317170, 354403, 413770, 506290, 708806, 1164467, 1772015, 2328934, 3544030, 5822335, 8151269, 11644670, 16302538, 40756345, 81512690]

約数ペア:

[(1, 81512690), (2, 40756345), (5, 16302538), (7, 11644670), (10, 8151269), (14, 5822335), (23, 3544030), (35, 2328934), (46, 1772015), (70, 1164467), (115, 708806), (161, 506290), (197, 413770), (230, 354403), (257, 317170), (322, 253145), (394, 206885), (514, 158585), (805, 101258), (985, 82754), (1285, 63434), (1379, 59110), (1610, 50629), (1799, 45310), (1970, 41377), (2570, 31717), (2758, 29555), (3598, 22655), (4531, 17990), (5911, 13790), (6895, 11822), (8995, 9062)]