28518280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{569}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 45353720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 569, 716, 895, 1138, 1253, 1432, 1790, 2276, 2506, 2845, 3580, 3983, 4552, 5012, 5690, 6265, 7160, 7966, 10024, 11380, 12530, 15932, 19915, 22760, 25060, 31864, 39830, 50120, 79660, 101851, 159320, 203702, 407404, 509255, 712957, 814808, 1018510, 1425914, 2037020, 2851828, 3564785, 4074040, 5703656, 7129570, 14259140, 28518280]

約数ペア:

[(1, 28518280), (2, 14259140), (4, 7129570), (5, 5703656), (7, 4074040), (8, 3564785), (10, 2851828), (14, 2037020), (20, 1425914), (28, 1018510), (35, 814808), (40, 712957), (56, 509255), (70, 407404), (140, 203702), (179, 159320), (280, 101851), (358, 79660), (569, 50120), (716, 39830), (895, 31864), (1138, 25060), (1253, 22760), (1432, 19915), (1790, 15932), (2276, 12530), (2506, 11380), (2845, 10024), (3580, 7966), (3983, 7160), (4552, 6265), (5012, 5690)]