16881425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 25391232

約数和(自身を除く): 8509807

約数列:

[1, 5, 11, 17, 23, 25, 55, 85, 115, 157, 187, 253, 275, 391, 425, 575, 785, 935, 1265, 1727, 1955, 2669, 3611, 3925, 4301, 4675, 6325, 8635, 9775, 13345, 18055, 21505, 29359, 39721, 43175, 61387, 66725, 90275, 107525, 146795, 198605, 306935, 675257, 733975, 993025, 1534675, 3376285, 16881425]

約数ペア:

[(1, 16881425), (5, 3376285), (11, 1534675), (17, 993025), (23, 733975), (25, 675257), (55, 306935), (85, 198605), (115, 146795), (157, 107525), (187, 90275), (253, 66725), (275, 61387), (391, 43175), (425, 39721), (575, 29359), (785, 21505), (935, 18055), (1265, 13345), (1727, 9775), (1955, 8635), (2669, 6325), (3611, 4675), (3925, 4301)]