18816688

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 44461440

約数和(自身を除く): 25644752

約数列:

[1, 2, 4, 8, 11, 16, 17, 19, 22, 34, 38, 44, 68, 76, 88, 136, 152, 176, 187, 209, 272, 304, 323, 331, 374, 418, 646, 662, 748, 836, 1292, 1324, 1496, 1672, 2584, 2648, 2992, 3344, 3553, 3641, 5168, 5296, 5627, 6289, 7106, 7282, 11254, 12578, 14212, 14564, 22508, 25156, 28424, 29128, 45016, 50312, 56848, 58256, 61897, 69179, 90032, 100624, 106913, 123794, 138358, 213826, 247588, 276716, 427652, 495176, 553432, 855304, 990352, 1106864, 1176043, 1710608, 2352086, 4704172, 9408344, 18816688]

約数ペア:

[(1, 18816688), (2, 9408344), (4, 4704172), (8, 2352086), (11, 1710608), (16, 1176043), (17, 1106864), (19, 990352), (22, 855304), (34, 553432), (38, 495176), (44, 427652), (68, 276716), (76, 247588), (88, 213826), (136, 138358), (152, 123794), (176, 106913), (187, 100624), (209, 90032), (272, 69179), (304, 61897), (323, 58256), (331, 56848), (374, 50312), (418, 45016), (646, 29128), (662, 28424), (748, 25156), (836, 22508), (1292, 14564), (1324, 14212), (1496, 12578), (1672, 11254), (2584, 7282), (2648, 7106), (2992, 6289), (3344, 5627), (3553, 5296), (3641, 5168)]