13121920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 37454400

約数和(自身を除く): 24332480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 101, 112, 116, 128, 140, 145, 160, 202, 203, 224, 232, 280, 290, 320, 404, 406, 448, 464, 505, 560, 580, 640, 707, 808, 812, 896, 928, 1010, 1015, 1120, 1160, 1414, 1616, 1624, 1856, 2020, 2030, 2240, 2320, 2828, 2929, 3232, 3248, 3535, 3712, 4040, 4060, 4480, 4640, 5656, 5858, 6464, 6496, 7070, 8080, 8120, 9280, 11312, 11716, 12928, 12992, 14140, 14645, 16160, 16240, 18560, 20503, 22624, 23432, 25984, 28280, 29290, 32320, 32480, 41006, 45248, 46864, 56560, 58580, 64640, 64960, 82012, 90496, 93728, 102515, 113120, 117160, 129920, 164024, 187456, 205030, 226240, 234320, 328048, 374912, 410060, 452480, 468640, 656096, 820120, 937280, 1312192, 1640240, 1874560, 2624384, 3280480, 6560960, 13121920]

約数ペア:

[(1, 13121920), (2, 6560960), (4, 3280480), (5, 2624384), (7, 1874560), (8, 1640240), (10, 1312192), (14, 937280), (16, 820120), (20, 656096), (28, 468640), (29, 452480), (32, 410060), (35, 374912), (40, 328048), (56, 234320), (58, 226240), (64, 205030), (70, 187456), (80, 164024), (101, 129920), (112, 117160), (116, 113120), (128, 102515), (140, 93728), (145, 90496), (160, 82012), (202, 64960), (203, 64640), (224, 58580), (232, 56560), (280, 46864), (290, 45248), (320, 41006), (404, 32480), (406, 32320), (448, 29290), (464, 28280), (505, 25984), (560, 23432), (580, 22624), (640, 20503), (707, 18560), (808, 16240), (812, 16160), (896, 14645), (928, 14140), (1010, 12992), (1015, 12928), (1120, 11716), (1160, 11312), (1414, 9280), (1616, 8120), (1624, 8080), (1856, 7070), (2020, 6496), (2030, 6464), (2240, 5858), (2320, 5656), (2828, 4640), (2929, 4480), (3232, 4060), (3248, 4040), (3535, 3712)]