18872516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 38744496

約数和(自身を除く): 19871980

約数列:

[1, 2, 4, 13, 17, 26, 34, 37, 52, 68, 74, 148, 221, 442, 481, 577, 629, 884, 962, 1154, 1258, 1924, 2308, 2516, 7501, 8177, 9809, 15002, 16354, 19618, 21349, 30004, 32708, 39236, 42698, 85396, 127517, 255034, 277537, 362933, 510068, 555074, 725866, 1110148, 1451732, 4718129, 9436258, 18872516]

約数ペア:

[(1, 18872516), (2, 9436258), (4, 4718129), (13, 1451732), (17, 1110148), (26, 725866), (34, 555074), (37, 510068), (52, 362933), (68, 277537), (74, 255034), (148, 127517), (221, 85396), (442, 42698), (481, 39236), (577, 32708), (629, 30004), (884, 21349), (962, 19618), (1154, 16354), (1258, 15002), (1924, 9809), (2308, 8177), (2516, 7501)]