2100705800

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{409}}^1\times {\mathrm{421}}^1$

素因数の和:907

約数の個数: 96

約数和(自身を含む): 4988166600

約数和(自身を除く): 2887460800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 409, 421, 488, 610, 818, 842, 1220, 1525, 1636, 1684, 2045, 2105, 2440, 3050, 3272, 3368, 4090, 4210, 6100, 8180, 8420, 10225, 10525, 12200, 16360, 16840, 20450, 21050, 24949, 25681, 40900, 42100, 49898, 51362, 81800, 84200, 99796, 102724, 124745, 128405, 172189, 199592, 205448, 249490, 256810, 344378, 498980, 513620, 623725, 642025, 688756, 860945, 997960, 1027240, 1247450, 1284050, 1377512, 1721890, 2494900, 2568100, 3443780, 4304725, 4989800, 5136200, 6887560, 8609450, 10503529, 17218900, 21007058, 34437800, 42014116, 52517645, 84028232, 105035290, 210070580, 262588225, 420141160, 525176450, 1050352900, 2100705800]

約数ペア:

[(1, 2100705800), (2, 1050352900), (4, 525176450), (5, 420141160), (8, 262588225), (10, 210070580), (20, 105035290), (25, 84028232), (40, 52517645), (50, 42014116), (61, 34437800), (100, 21007058), (122, 17218900), (200, 10503529), (244, 8609450), (305, 6887560), (409, 5136200), (421, 4989800), (488, 4304725), (610, 3443780), (818, 2568100), (842, 2494900), (1220, 1721890), (1525, 1377512), (1636, 1284050), (1684, 1247450), (2045, 1027240), (2105, 997960), (2440, 860945), (3050, 688756), (3272, 642025), (3368, 623725), (4090, 513620), (4210, 498980), (6100, 344378), (8180, 256810), (8420, 249490), (10225, 205448), (10525, 199592), (12200, 172189), (16360, 128405), (16840, 124745), (20450, 102724), (21050, 99796), (24949, 84200), (25681, 81800), (40900, 51362), (42100, 49898)]