20193460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1487}}^1$

素因数の和:1600

約数の個数: 48

約数和(自身を含む): 48996864

約数和(自身を除く): 28803404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1487, 1940, 2716, 2974, 3395, 5948, 6790, 7435, 10409, 13580, 14870, 20818, 29740, 41636, 52045, 104090, 144239, 208180, 288478, 576956, 721195, 1009673, 1442390, 2019346, 2884780, 4038692, 5048365, 10096730, 20193460]

約数ペア:

[(1, 20193460), (2, 10096730), (4, 5048365), (5, 4038692), (7, 2884780), (10, 2019346), (14, 1442390), (20, 1009673), (28, 721195), (35, 576956), (70, 288478), (97, 208180), (140, 144239), (194, 104090), (388, 52045), (485, 41636), (679, 29740), (970, 20818), (1358, 14870), (1487, 13580), (1940, 10409), (2716, 7435), (2974, 6790), (3395, 5948)]