398634880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{881}}^1$

素因数の和:1008

約数の個数: 128

約数和(自身を含む): 1101159360

約数和(自身を除く): 702524480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 101, 112, 128, 140, 160, 202, 224, 280, 320, 404, 448, 505, 560, 640, 707, 808, 881, 896, 1010, 1120, 1414, 1616, 1762, 2020, 2240, 2828, 3232, 3524, 3535, 4040, 4405, 4480, 5656, 6167, 6464, 7048, 7070, 8080, 8810, 11312, 12334, 12928, 14096, 14140, 16160, 17620, 22624, 24668, 28192, 28280, 30835, 32320, 35240, 45248, 49336, 56384, 56560, 61670, 64640, 70480, 88981, 90496, 98672, 112768, 113120, 123340, 140960, 177962, 197344, 226240, 246680, 281920, 355924, 394688, 444905, 452480, 493360, 563840, 622867, 711848, 789376, 889810, 986720, 1245734, 1423696, 1779620, 1973440, 2491468, 2847392, 3114335, 3559240, 3946880, 4982936, 5694784, 6228670, 7118480, 9965872, 11389568, 12457340, 14236960, 19931744, 24914680, 28473920, 39863488, 49829360, 56947840, 79726976, 99658720, 199317440, 398634880]

約数ペア:

[(1, 398634880), (2, 199317440), (4, 99658720), (5, 79726976), (7, 56947840), (8, 49829360), (10, 39863488), (14, 28473920), (16, 24914680), (20, 19931744), (28, 14236960), (32, 12457340), (35, 11389568), (40, 9965872), (56, 7118480), (64, 6228670), (70, 5694784), (80, 4982936), (101, 3946880), (112, 3559240), (128, 3114335), (140, 2847392), (160, 2491468), (202, 1973440), (224, 1779620), (280, 1423696), (320, 1245734), (404, 986720), (448, 889810), (505, 789376), (560, 711848), (640, 622867), (707, 563840), (808, 493360), (881, 452480), (896, 444905), (1010, 394688), (1120, 355924), (1414, 281920), (1616, 246680), (1762, 226240), (2020, 197344), (2240, 177962), (2828, 140960), (3232, 123340), (3524, 113120), (3535, 112768), (4040, 98672), (4405, 90496), (4480, 88981), (5656, 70480), (6167, 64640), (6464, 61670), (7048, 56560), (7070, 56384), (8080, 49336), (8810, 45248), (11312, 35240), (12334, 32320), (12928, 30835), (14096, 28280), (14140, 28192), (16160, 24668), (17620, 22624)]