320173840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{81677}}^1$

素因数の和:81704

約数の個数: 60

約数和(自身を含む): 865950156

約数和(自身を除く): 545776316

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 81677, 163354, 326708, 408385, 571739, 653416, 816770, 1143478, 1306832, 1633540, 2286956, 2858695, 3267080, 4002173, 4573912, 5717390, 6534160, 8004346, 9147824, 11434780, 16008692, 20010865, 22869560, 32017384, 40021730, 45739120, 64034768, 80043460, 160086920, 320173840]

約数ペア:

[(1, 320173840), (2, 160086920), (4, 80043460), (5, 64034768), (7, 45739120), (8, 40021730), (10, 32017384), (14, 22869560), (16, 20010865), (20, 16008692), (28, 11434780), (35, 9147824), (40, 8004346), (49, 6534160), (56, 5717390), (70, 4573912), (80, 4002173), (98, 3267080), (112, 2858695), (140, 2286956), (196, 1633540), (245, 1306832), (280, 1143478), (392, 816770), (490, 653416), (560, 571739), (784, 408385), (980, 326708), (1960, 163354), (3920, 81677)]