20509575550

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{164011}}^1$

素因数の和:164125

約数の個数: 48

約数和(自身を含む): 39719114064

約数和(自身を除く): 19209538514

約数列:

[1, 2, 5, 10, 25, 41, 50, 61, 82, 122, 205, 305, 410, 610, 1025, 1525, 2050, 2501, 3050, 5002, 12505, 25010, 62525, 125050, 164011, 328022, 820055, 1640110, 4100275, 6724451, 8200550, 10004671, 13448902, 20009342, 33622255, 50023355, 67244510, 100046710, 168111275, 250116775, 336222550, 410191511, 500233550, 820383022, 2050957555, 4101915110, 10254787775, 20509575550]

約数ペア:

[(1, 20509575550), (2, 10254787775), (5, 4101915110), (10, 2050957555), (25, 820383022), (41, 500233550), (50, 410191511), (61, 336222550), (82, 250116775), (122, 168111275), (205, 100046710), (305, 67244510), (410, 50023355), (610, 33622255), (1025, 20009342), (1525, 13448902), (2050, 10004671), (2501, 8200550), (3050, 6724451), (5002, 4100275), (12505, 1640110), (25010, 820055), (62525, 328022), (125050, 164011)]