28393540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4139}}^1$

素因数の和:4169

約数の個数: 48

約数和(自身を含む): 69552000

約数和(自身を除く): 41158460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 4139, 6860, 8278, 16556, 20695, 28973, 41390, 57946, 82780, 115892, 144865, 202811, 289730, 405622, 579460, 811244, 1014055, 1419677, 2028110, 2839354, 4056220, 5678708, 7098385, 14196770, 28393540]

約数ペア:

[(1, 28393540), (2, 14196770), (4, 7098385), (5, 5678708), (7, 4056220), (10, 2839354), (14, 2028110), (20, 1419677), (28, 1014055), (35, 811244), (49, 579460), (70, 405622), (98, 289730), (140, 202811), (196, 144865), (245, 115892), (343, 82780), (490, 57946), (686, 41390), (980, 28973), (1372, 20695), (1715, 16556), (3430, 8278), (4139, 6860)]