28651280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{7309}}^1$

素因数の和:7336

約数の個数: 60

約数和(自身を含む): 77500620

約数和(自身を除く): 48849340

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, 7309, 14618, 29236, 36545, 51163, 58472, 73090, 102326, 116944, 146180, 204652, 255815, 292360, 358141, 409304, 511630, 584720, 716282, 818608, 1023260, 1432564, 1790705, 2046520, 2865128, 3581410, 4093040, 5730256, 7162820, 14325640, 28651280]

約数ペア:

[(1, 28651280), (2, 14325640), (4, 7162820), (5, 5730256), (7, 4093040), (8, 3581410), (10, 2865128), (14, 2046520), (16, 1790705), (20, 1432564), (28, 1023260), (35, 818608), (40, 716282), (49, 584720), (56, 511630), (70, 409304), (80, 358141), (98, 292360), (112, 255815), (140, 204652), (196, 146180), (245, 116944), (280, 102326), (392, 73090), (490, 58472), (560, 51163), (784, 36545), (980, 29236), (1960, 14618), (3920, 7309)]