20040416

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 72

約数和(自身を含む): 45954216

約数和(自身を除く): 25913800

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 136, 176, 187, 197, 272, 289, 352, 374, 394, 544, 578, 748, 788, 1156, 1496, 1576, 2167, 2312, 2992, 3152, 3179, 3349, 4334, 4624, 5984, 6304, 6358, 6698, 8668, 9248, 12716, 13396, 17336, 25432, 26792, 34672, 36839, 50864, 53584, 56933, 69344, 73678, 101728, 107168, 113866, 147356, 227732, 294712, 455464, 589424, 626263, 910928, 1178848, 1252526, 1821856, 2505052, 5010104, 10020208, 20040416]

約数ペア:

[(1, 20040416), (2, 10020208), (4, 5010104), (8, 2505052), (11, 1821856), (16, 1252526), (17, 1178848), (22, 910928), (32, 626263), (34, 589424), (44, 455464), (68, 294712), (88, 227732), (136, 147356), (176, 113866), (187, 107168), (197, 101728), (272, 73678), (289, 69344), (352, 56933), (374, 53584), (394, 50864), (544, 36839), (578, 34672), (748, 26792), (788, 25432), (1156, 17336), (1496, 13396), (1576, 12716), (2167, 9248), (2312, 8668), (2992, 6698), (3152, 6358), (3179, 6304), (3349, 5984), (4334, 4624)]