388483840

素因数分解:

$2^8\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1361}}^1$

素因数の和:1605

約数の個数: 72

約数和(自身を含む): 935399808

約数和(自身を除く): 546915968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 256, 320, 446, 640, 892, 1115, 1280, 1361, 1784, 2230, 2722, 3568, 4460, 5444, 6805, 7136, 8920, 10888, 13610, 14272, 17840, 21776, 27220, 28544, 35680, 43552, 54440, 57088, 71360, 87104, 108880, 142720, 174208, 217760, 285440, 303503, 348416, 435520, 607006, 871040, 1214012, 1517515, 1742080, 2428024, 3035030, 4856048, 6070060, 9712096, 12140120, 19424192, 24280240, 38848384, 48560480, 77696768, 97120960, 194241920, 388483840]

約数ペア:

[(1, 388483840), (2, 194241920), (4, 97120960), (5, 77696768), (8, 48560480), (10, 38848384), (16, 24280240), (20, 19424192), (32, 12140120), (40, 9712096), (64, 6070060), (80, 4856048), (128, 3035030), (160, 2428024), (223, 1742080), (256, 1517515), (320, 1214012), (446, 871040), (640, 607006), (892, 435520), (1115, 348416), (1280, 303503), (1361, 285440), (1784, 217760), (2230, 174208), (2722, 142720), (3568, 108880), (4460, 87104), (5444, 71360), (6805, 57088), (7136, 54440), (8920, 43552), (10888, 35680), (13610, 28544), (14272, 27220), (17840, 21776)]