78920520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1999}}^1$

素因数の和:2067

約数の個数: 128

約数和(自身を含む): 276480000

約数和(自身を除く): 197559480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 56, 60, 70, 84, 94, 105, 120, 140, 141, 168, 188, 210, 235, 280, 282, 329, 376, 420, 470, 564, 658, 705, 840, 940, 987, 1128, 1316, 1410, 1645, 1880, 1974, 1999, 2632, 2820, 3290, 3948, 3998, 4935, 5640, 5997, 6580, 7896, 7996, 9870, 9995, 11994, 13160, 13993, 15992, 19740, 19990, 23988, 27986, 29985, 39480, 39980, 41979, 47976, 55972, 59970, 69965, 79960, 83958, 93953, 111944, 119940, 139930, 167916, 187906, 209895, 239880, 279860, 281859, 335832, 375812, 419790, 469765, 559720, 563718, 657671, 751624, 839580, 939530, 1127436, 1315342, 1409295, 1679160, 1879060, 1973013, 2254872, 2630684, 2818590, 3288355, 3758120, 3946026, 5261368, 5637180, 6576710, 7892052, 9865065, 11274360, 13153420, 15784104, 19730130, 26306840, 39460260, 78920520]

約数ペア:

[(1, 78920520), (2, 39460260), (3, 26306840), (4, 19730130), (5, 15784104), (6, 13153420), (7, 11274360), (8, 9865065), (10, 7892052), (12, 6576710), (14, 5637180), (15, 5261368), (20, 3946026), (21, 3758120), (24, 3288355), (28, 2818590), (30, 2630684), (35, 2254872), (40, 1973013), (42, 1879060), (47, 1679160), (56, 1409295), (60, 1315342), (70, 1127436), (84, 939530), (94, 839580), (105, 751624), (120, 657671), (140, 563718), (141, 559720), (168, 469765), (188, 419790), (210, 375812), (235, 335832), (280, 281859), (282, 279860), (329, 239880), (376, 209895), (420, 187906), (470, 167916), (564, 139930), (658, 119940), (705, 111944), (840, 93953), (940, 83958), (987, 79960), (1128, 69965), (1316, 59970), (1410, 55972), (1645, 47976), (1880, 41979), (1974, 39980), (1999, 39480), (2632, 29985), (2820, 27986), (3290, 23988), (3948, 19990), (3998, 19740), (4935, 15992), (5640, 13993), (5997, 13160), (6580, 11994), (7896, 9995), (7996, 9870)]