20857589168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{4789}}^1\times {\mathrm{20939}}^1$

素因数の和:25749

約数の個数: 40

約数和(自身を含む): 43531328400

約数和(自身を除く): 22673739232

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 4789, 9578, 19156, 20939, 38312, 41878, 62257, 76624, 83756, 124514, 167512, 249028, 272207, 335024, 498056, 544414, 996112, 1088828, 2177656, 4355312, 100276871, 200553742, 401107484, 802214968, 1303599323, 1604429936, 2607198646, 5214397292, 10428794584, 20857589168]

約数ペア:

[(1, 20857589168), (2, 10428794584), (4, 5214397292), (8, 2607198646), (13, 1604429936), (16, 1303599323), (26, 802214968), (52, 401107484), (104, 200553742), (208, 100276871), (4789, 4355312), (9578, 2177656), (19156, 1088828), (20939, 996112), (38312, 544414), (41878, 498056), (62257, 335024), (76624, 272207), (83756, 249028), (124514, 167512)]