320211920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{577}}^1\times {\mathrm{991}}^1$

素因数の和:1588

約数の個数: 80

約数和(自身を含む): 853183488

約数和(自身を除く): 532971568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 577, 991, 1154, 1982, 2308, 2885, 3964, 4039, 4616, 4955, 5770, 6937, 7928, 8078, 9232, 9910, 11540, 13874, 15856, 16156, 19820, 20195, 23080, 27748, 32312, 34685, 39640, 40390, 46160, 55496, 64624, 69370, 79280, 80780, 110992, 138740, 161560, 277480, 323120, 554960, 571807, 1143614, 2287228, 2859035, 4002649, 4574456, 5718070, 8005298, 9148912, 11436140, 16010596, 20013245, 22872280, 32021192, 40026490, 45744560, 64042384, 80052980, 160105960, 320211920]

約数ペア:

[(1, 320211920), (2, 160105960), (4, 80052980), (5, 64042384), (7, 45744560), (8, 40026490), (10, 32021192), (14, 22872280), (16, 20013245), (20, 16010596), (28, 11436140), (35, 9148912), (40, 8005298), (56, 5718070), (70, 4574456), (80, 4002649), (112, 2859035), (140, 2287228), (280, 1143614), (560, 571807), (577, 554960), (991, 323120), (1154, 277480), (1982, 161560), (2308, 138740), (2885, 110992), (3964, 80780), (4039, 79280), (4616, 69370), (4955, 64624), (5770, 55496), (6937, 46160), (7928, 40390), (8078, 39640), (9232, 34685), (9910, 32312), (11540, 27748), (13874, 23080), (15856, 20195), (16156, 19820)]