20057660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 49737744

約数和(自身を除く): 29680084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 97, 98, 140, 194, 196, 211, 245, 388, 422, 485, 490, 679, 844, 970, 980, 1055, 1358, 1477, 1940, 2110, 2716, 2954, 3395, 4220, 4753, 5908, 6790, 7385, 9506, 10339, 13580, 14770, 19012, 20467, 20678, 23765, 29540, 40934, 41356, 47530, 51695, 81868, 95060, 102335, 103390, 143269, 204670, 206780, 286538, 409340, 573076, 716345, 1002883, 1432690, 2005766, 2865380, 4011532, 5014415, 10028830, 20057660]

約数ペア:

[(1, 20057660), (2, 10028830), (4, 5014415), (5, 4011532), (7, 2865380), (10, 2005766), (14, 1432690), (20, 1002883), (28, 716345), (35, 573076), (49, 409340), (70, 286538), (97, 206780), (98, 204670), (140, 143269), (194, 103390), (196, 102335), (211, 95060), (245, 81868), (388, 51695), (422, 47530), (485, 41356), (490, 40934), (679, 29540), (844, 23765), (970, 20678), (980, 20467), (1055, 19012), (1358, 14770), (1477, 13580), (1940, 10339), (2110, 9506), (2716, 7385), (2954, 6790), (3395, 5908), (4220, 4753)]