21342700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 49996800

約数和(自身を除く): 28654100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 47, 50, 76, 94, 95, 100, 188, 190, 235, 239, 380, 470, 475, 478, 893, 940, 950, 956, 1175, 1195, 1786, 1900, 2350, 2390, 3572, 4465, 4541, 4700, 4780, 5975, 8930, 9082, 11233, 11950, 17860, 18164, 22325, 22466, 22705, 23900, 44650, 44932, 45410, 56165, 89300, 90820, 112330, 113525, 213427, 224660, 227050, 280825, 426854, 454100, 561650, 853708, 1067135, 1123300, 2134270, 4268540, 5335675, 10671350, 21342700]

約数ペア:

[(1, 21342700), (2, 10671350), (4, 5335675), (5, 4268540), (10, 2134270), (19, 1123300), (20, 1067135), (25, 853708), (38, 561650), (47, 454100), (50, 426854), (76, 280825), (94, 227050), (95, 224660), (100, 213427), (188, 113525), (190, 112330), (235, 90820), (239, 89300), (380, 56165), (470, 45410), (475, 44932), (478, 44650), (893, 23900), (940, 22705), (950, 22466), (956, 22325), (1175, 18164), (1195, 17860), (1786, 11950), (1900, 11233), (2350, 9082), (2390, 8930), (3572, 5975), (4465, 4780), (4541, 4700)]