20618144

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 22818592

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 151, 251, 272, 302, 502, 544, 604, 1004, 1208, 2008, 2416, 2567, 4016, 4267, 4832, 5134, 8032, 8534, 10268, 17068, 20536, 34136, 37901, 41072, 68272, 75802, 82144, 136544, 151604, 303208, 606416, 644317, 1212832, 1288634, 2577268, 5154536, 10309072, 20618144]

約数ペア:

[(1, 20618144), (2, 10309072), (4, 5154536), (8, 2577268), (16, 1288634), (17, 1212832), (32, 644317), (34, 606416), (68, 303208), (136, 151604), (151, 136544), (251, 82144), (272, 75802), (302, 68272), (502, 41072), (544, 37901), (604, 34136), (1004, 20536), (1208, 17068), (2008, 10268), (2416, 8534), (2567, 8032), (4016, 5134), (4267, 4832)]