221969920

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2797}}^1$

素因数の和:2851

約数の個数: 80

約数和(自身を含む): 549571968

約数和(自身を除く): 327602048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 2797, 3968, 4960, 5594, 7936, 9920, 11188, 13985, 15872, 19840, 22376, 27970, 39680, 44752, 55940, 79360, 86707, 89504, 111880, 173414, 179008, 223760, 346828, 358016, 433535, 447520, 693656, 716032, 867070, 895040, 1387312, 1432064, 1734140, 1790080, 2774624, 3468280, 3580160, 5549248, 6936560, 7160320, 11098496, 13873120, 22196992, 27746240, 44393984, 55492480, 110984960, 221969920]

約数ペア:

[(1, 221969920), (2, 110984960), (4, 55492480), (5, 44393984), (8, 27746240), (10, 22196992), (16, 13873120), (20, 11098496), (31, 7160320), (32, 6936560), (40, 5549248), (62, 3580160), (64, 3468280), (80, 2774624), (124, 1790080), (128, 1734140), (155, 1432064), (160, 1387312), (248, 895040), (256, 867070), (310, 716032), (320, 693656), (496, 447520), (512, 433535), (620, 358016), (640, 346828), (992, 223760), (1240, 179008), (1280, 173414), (1984, 111880), (2480, 89504), (2560, 86707), (2797, 79360), (3968, 55940), (4960, 44752), (5594, 39680), (7936, 27970), (9920, 22376), (11188, 19840), (13985, 15872)]