207781250

素因数分解:

$2^1\times 5^6\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:202

約数の個数: 56

約数和(自身を含む): 399604260

約数和(自身を除く): 191823010

約数列:

[1, 2, 5, 10, 25, 50, 61, 109, 122, 125, 218, 250, 305, 545, 610, 625, 1090, 1250, 1525, 2725, 3050, 3125, 5450, 6250, 6649, 7625, 13298, 13625, 15250, 15625, 27250, 31250, 33245, 38125, 66490, 68125, 76250, 136250, 166225, 190625, 332450, 340625, 381250, 681250, 831125, 953125, 1662250, 1703125, 1906250, 3406250, 4155625, 8311250, 20778125, 41556250, 103890625, 207781250]

約数ペア:

[(1, 207781250), (2, 103890625), (5, 41556250), (10, 20778125), (25, 8311250), (50, 4155625), (61, 3406250), (109, 1906250), (122, 1703125), (125, 1662250), (218, 953125), (250, 831125), (305, 681250), (545, 381250), (610, 340625), (625, 332450), (1090, 190625), (1250, 166225), (1525, 136250), (2725, 76250), (3050, 68125), (3125, 66490), (5450, 38125), (6250, 33245), (6649, 31250), (7625, 27250), (13298, 15625), (13625, 15250)]