920888372680

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1229}}^1\times {\mathrm{72889}}^1$

素因数の和:74386

約数の個数: 64

約数和(自身を含む): 2081782134000

約数和(自身を除く): 1160893761320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1229, 1285, 2056, 2458, 2570, 4916, 5140, 6145, 9832, 10280, 12290, 24580, 49160, 72889, 145778, 291556, 315853, 364445, 583112, 631706, 728890, 1263412, 1457780, 1579265, 2526824, 2915560, 3158530, 6317060, 12634120, 18732473, 37464946, 74929892, 89580581, 93662365, 149859784, 179161162, 187324730, 358322324, 374649460, 447902905, 716644648, 749298920, 895805810, 1791611620, 3583223240, 23022209317, 46044418634, 92088837268, 115111046585, 184177674536, 230222093170, 460444186340, 920888372680]

約数ペア:

[(1, 920888372680), (2, 460444186340), (4, 230222093170), (5, 184177674536), (8, 115111046585), (10, 92088837268), (20, 46044418634), (40, 23022209317), (257, 3583223240), (514, 1791611620), (1028, 895805810), (1229, 749298920), (1285, 716644648), (2056, 447902905), (2458, 374649460), (2570, 358322324), (4916, 187324730), (5140, 179161162), (6145, 149859784), (9832, 93662365), (10280, 89580581), (12290, 74929892), (24580, 37464946), (49160, 18732473), (72889, 12634120), (145778, 6317060), (291556, 3158530), (315853, 2915560), (364445, 2526824), (583112, 1579265), (631706, 1457780), (728890, 1263412)]