21000325648

素因数分解:

$2^4\times {\mathrm{857}}^1\times {\mathrm{1109}}^1\times {\mathrm{1381}}^1$

素因数の和:3355

約数の個数: 40

約数和(自身を含む): 40801863960

約数和(自身を除く): 19801538312

約数列:

[1, 2, 4, 8, 16, 857, 1109, 1381, 1714, 2218, 2762, 3428, 4436, 5524, 6856, 8872, 11048, 13712, 17744, 22096, 950413, 1183517, 1531529, 1900826, 2367034, 3063058, 3801652, 4734068, 6126116, 7603304, 9468136, 12252232, 15206608, 18936272, 24504464, 1312520353, 2625040706, 5250081412, 10500162824, 21000325648]

約数ペア:

[(1, 21000325648), (2, 10500162824), (4, 5250081412), (8, 2625040706), (16, 1312520353), (857, 24504464), (1109, 18936272), (1381, 15206608), (1714, 12252232), (2218, 9468136), (2762, 7603304), (3428, 6126116), (4436, 4734068), (5524, 3801652), (6856, 3063058), (8872, 2367034), (11048, 1900826), (13712, 1531529), (17744, 1183517), (22096, 950413)]