81352300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:991

約数の個数: 72

約数和(自身を含む): 189987840

約数和(自身を除く): 108635540

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 47, 50, 76, 94, 95, 100, 188, 190, 235, 380, 470, 475, 893, 911, 940, 950, 1175, 1786, 1822, 1900, 2350, 3572, 3644, 4465, 4555, 4700, 8930, 9110, 17309, 17860, 18220, 22325, 22775, 34618, 42817, 44650, 45550, 69236, 85634, 86545, 89300, 91100, 171268, 173090, 214085, 346180, 428170, 432725, 813523, 856340, 865450, 1070425, 1627046, 1730900, 2140850, 3254092, 4067615, 4281700, 8135230, 16270460, 20338075, 40676150, 81352300]

約数ペア:

[(1, 81352300), (2, 40676150), (4, 20338075), (5, 16270460), (10, 8135230), (19, 4281700), (20, 4067615), (25, 3254092), (38, 2140850), (47, 1730900), (50, 1627046), (76, 1070425), (94, 865450), (95, 856340), (100, 813523), (188, 432725), (190, 428170), (235, 346180), (380, 214085), (470, 173090), (475, 171268), (893, 91100), (911, 89300), (940, 86545), (950, 85634), (1175, 69236), (1786, 45550), (1822, 44650), (1900, 42817), (2350, 34618), (3572, 22775), (3644, 22325), (4465, 18220), (4555, 17860), (4700, 17309), (8930, 9110)]