20528750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1493}}^1$

素因数の和:1526

約数の個数: 40

約数和(自身を含む): 42005304

約数和(自身を除く): 21476554

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1493, 2750, 2986, 6875, 7465, 13750, 14930, 16423, 32846, 37325, 74650, 82115, 164230, 186625, 373250, 410575, 821150, 933125, 1866250, 2052875, 4105750, 10264375, 20528750]

約数ペア:

[(1, 20528750), (2, 10264375), (5, 4105750), (10, 2052875), (11, 1866250), (22, 933125), (25, 821150), (50, 410575), (55, 373250), (110, 186625), (125, 164230), (250, 82115), (275, 74650), (550, 37325), (625, 32846), (1250, 16423), (1375, 14930), (1493, 13750), (2750, 7465), (2986, 6875)]