20551250

素因数分解:

$2^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:464

約数の個数: 40

約数和(自身を含む): 39559212

約数和(自身を除く): 19007962

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 401, 410, 625, 802, 1025, 1250, 2005, 2050, 4010, 5125, 10025, 10250, 16441, 20050, 25625, 32882, 50125, 51250, 82205, 100250, 164410, 250625, 411025, 501250, 822050, 2055125, 4110250, 10275625, 20551250]

約数ペア:

[(1, 20551250), (2, 10275625), (5, 4110250), (10, 2055125), (25, 822050), (41, 501250), (50, 411025), (82, 250625), (125, 164410), (205, 100250), (250, 82205), (401, 51250), (410, 50125), (625, 32882), (802, 25625), (1025, 20050), (1250, 16441), (2005, 10250), (2050, 10025), (4010, 5125)]