21721100

素因数分解:

$2^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{2617}}^1$

素因数の和:2714

約数の個数: 36

約数和(自身を含む): 47720904

約数和(自身を除く): 25999804

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 166, 332, 415, 830, 1660, 2075, 2617, 4150, 5234, 8300, 10468, 13085, 26170, 52340, 65425, 130850, 217211, 261700, 434422, 868844, 1086055, 2172110, 4344220, 5430275, 10860550, 21721100]

約数ペア:

[(1, 21721100), (2, 10860550), (4, 5430275), (5, 4344220), (10, 2172110), (20, 1086055), (25, 868844), (50, 434422), (83, 261700), (100, 217211), (166, 130850), (332, 65425), (415, 52340), (830, 26170), (1660, 13085), (2075, 10468), (2617, 8300), (4150, 5234)]