20844040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 38253560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 85, 116, 119, 136, 140, 145, 151, 170, 203, 232, 238, 280, 290, 302, 340, 406, 476, 493, 580, 595, 604, 680, 755, 812, 952, 986, 1015, 1057, 1160, 1190, 1208, 1510, 1624, 1972, 2030, 2114, 2380, 2465, 2567, 3020, 3451, 3944, 4060, 4228, 4379, 4760, 4930, 5134, 5285, 6040, 6902, 8120, 8456, 8758, 9860, 10268, 10570, 12835, 13804, 17255, 17516, 17969, 19720, 20536, 21140, 21895, 25670, 27608, 30653, 34510, 35032, 35938, 42280, 43790, 51340, 61306, 69020, 71876, 74443, 87580, 89845, 102680, 122612, 138040, 143752, 148886, 153265, 175160, 179690, 245224, 297772, 306530, 359380, 372215, 521101, 595544, 613060, 718760, 744430, 1042202, 1226120, 1488860, 2084404, 2605505, 2977720, 4168808, 5211010, 10422020, 20844040]

約数ペア:

[(1, 20844040), (2, 10422020), (4, 5211010), (5, 4168808), (7, 2977720), (8, 2605505), (10, 2084404), (14, 1488860), (17, 1226120), (20, 1042202), (28, 744430), (29, 718760), (34, 613060), (35, 595544), (40, 521101), (56, 372215), (58, 359380), (68, 306530), (70, 297772), (85, 245224), (116, 179690), (119, 175160), (136, 153265), (140, 148886), (145, 143752), (151, 138040), (170, 122612), (203, 102680), (232, 89845), (238, 87580), (280, 74443), (290, 71876), (302, 69020), (340, 61306), (406, 51340), (476, 43790), (493, 42280), (580, 35938), (595, 35032), (604, 34510), (680, 30653), (755, 27608), (812, 25670), (952, 21895), (986, 21140), (1015, 20536), (1057, 19720), (1160, 17969), (1190, 17516), (1208, 17255), (1510, 13804), (1624, 12835), (1972, 10570), (2030, 10268), (2114, 9860), (2380, 8758), (2465, 8456), (2567, 8120), (3020, 6902), (3451, 6040), (3944, 5285), (4060, 5134), (4228, 4930), (4379, 4760)]