661842640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:329

約数の個数: 160

約数和(自身を含む): 1712702880

約数和(自身を除く): 1050860240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 68, 80, 85, 97, 116, 136, 145, 170, 173, 194, 232, 272, 290, 340, 346, 388, 464, 485, 493, 580, 680, 692, 776, 865, 970, 986, 1160, 1360, 1384, 1552, 1649, 1730, 1940, 1972, 2320, 2465, 2768, 2813, 2941, 3298, 3460, 3880, 3944, 4930, 5017, 5626, 5882, 6596, 6920, 7760, 7888, 8245, 9860, 10034, 11252, 11764, 13192, 13840, 14065, 14705, 16490, 16781, 19720, 20068, 22504, 23528, 25085, 26384, 28130, 29410, 32980, 33562, 39440, 40136, 45008, 47056, 47821, 50170, 56260, 58820, 65960, 67124, 80272, 83905, 85289, 95642, 100340, 112520, 117640, 131920, 134248, 167810, 170578, 191284, 200680, 225040, 235280, 239105, 268496, 285277, 335620, 341156, 382568, 401360, 426445, 478210, 486649, 570554, 671240, 682312, 765136, 852890, 956420, 973298, 1141108, 1342480, 1364624, 1426385, 1705780, 1912840, 1946596, 2282216, 2433245, 2852770, 3411560, 3825680, 3893192, 4564432, 4866490, 5705540, 6823120, 7786384, 8273033, 9732980, 11411080, 16546066, 19465960, 22822160, 33092132, 38931920, 41365165, 66184264, 82730330, 132368528, 165460660, 330921320, 661842640]

約数ペア:

[(1, 661842640), (2, 330921320), (4, 165460660), (5, 132368528), (8, 82730330), (10, 66184264), (16, 41365165), (17, 38931920), (20, 33092132), (29, 22822160), (34, 19465960), (40, 16546066), (58, 11411080), (68, 9732980), (80, 8273033), (85, 7786384), (97, 6823120), (116, 5705540), (136, 4866490), (145, 4564432), (170, 3893192), (173, 3825680), (194, 3411560), (232, 2852770), (272, 2433245), (290, 2282216), (340, 1946596), (346, 1912840), (388, 1705780), (464, 1426385), (485, 1364624), (493, 1342480), (580, 1141108), (680, 973298), (692, 956420), (776, 852890), (865, 765136), (970, 682312), (986, 671240), (1160, 570554), (1360, 486649), (1384, 478210), (1552, 426445), (1649, 401360), (1730, 382568), (1940, 341156), (1972, 335620), (2320, 285277), (2465, 268496), (2768, 239105), (2813, 235280), (2941, 225040), (3298, 200680), (3460, 191284), (3880, 170578), (3944, 167810), (4930, 134248), (5017, 131920), (5626, 117640), (5882, 112520), (6596, 100340), (6920, 95642), (7760, 85289), (7888, 83905), (8245, 80272), (9860, 67124), (10034, 65960), (11252, 58820), (11764, 56260), (13192, 50170), (13840, 47821), (14065, 47056), (14705, 45008), (16490, 40136), (16781, 39440), (19720, 33562), (20068, 32980), (22504, 29410), (23528, 28130), (25085, 26384)]