18849040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{347}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 50746752

約数和(自身を除く): 31897712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 347, 388, 485, 560, 679, 694, 776, 970, 1358, 1388, 1552, 1735, 1940, 2429, 2716, 2776, 3395, 3470, 3880, 4858, 5432, 5552, 6790, 6940, 7760, 9716, 10864, 12145, 13580, 13880, 19432, 24290, 27160, 27760, 33659, 38864, 48580, 54320, 67318, 97160, 134636, 168295, 194320, 235613, 269272, 336590, 471226, 538544, 673180, 942452, 1178065, 1346360, 1884904, 2356130, 2692720, 3769808, 4712260, 9424520, 18849040]

約数ペア:

[(1, 18849040), (2, 9424520), (4, 4712260), (5, 3769808), (7, 2692720), (8, 2356130), (10, 1884904), (14, 1346360), (16, 1178065), (20, 942452), (28, 673180), (35, 538544), (40, 471226), (56, 336590), (70, 269272), (80, 235613), (97, 194320), (112, 168295), (140, 134636), (194, 97160), (280, 67318), (347, 54320), (388, 48580), (485, 38864), (560, 33659), (679, 27760), (694, 27160), (776, 24290), (970, 19432), (1358, 13880), (1388, 13580), (1552, 12145), (1735, 10864), (1940, 9716), (2429, 7760), (2716, 6940), (2776, 6790), (3395, 5552), (3470, 5432), (3880, 4858)]