2561194780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1\times {\mathrm{3907}}^1$

素因数の和:4438

約数の個数: 48

約数和(自身を含む): 5465728800

約数和(自身を除く): 2904534020

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 449, 730, 898, 1460, 1796, 2245, 3907, 4490, 7814, 8980, 15628, 19535, 32777, 39070, 65554, 78140, 131108, 163885, 285211, 327770, 570422, 655540, 1140844, 1426055, 1754243, 2852110, 3508486, 5704220, 7016972, 8771215, 17542430, 35084860, 128059739, 256119478, 512238956, 640298695, 1280597390, 2561194780]

約数ペア:

[(1, 2561194780), (2, 1280597390), (4, 640298695), (5, 512238956), (10, 256119478), (20, 128059739), (73, 35084860), (146, 17542430), (292, 8771215), (365, 7016972), (449, 5704220), (730, 3508486), (898, 2852110), (1460, 1754243), (1796, 1426055), (2245, 1140844), (3907, 655540), (4490, 570422), (7814, 327770), (8980, 285211), (15628, 163885), (19535, 131108), (32777, 78140), (39070, 65554)]