18871480

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 44815680

約数和(自身を除く): 25944200

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 41, 74, 82, 148, 164, 185, 205, 296, 311, 328, 370, 410, 622, 740, 820, 1244, 1480, 1517, 1555, 1640, 2488, 3034, 3110, 6068, 6220, 7585, 11507, 12136, 12440, 12751, 15170, 23014, 25502, 30340, 46028, 51004, 57535, 60680, 63755, 92056, 102008, 115070, 127510, 230140, 255020, 460280, 471787, 510040, 943574, 1887148, 2358935, 3774296, 4717870, 9435740, 18871480]

約数ペア:

[(1, 18871480), (2, 9435740), (4, 4717870), (5, 3774296), (8, 2358935), (10, 1887148), (20, 943574), (37, 510040), (40, 471787), (41, 460280), (74, 255020), (82, 230140), (148, 127510), (164, 115070), (185, 102008), (205, 92056), (296, 63755), (311, 60680), (328, 57535), (370, 51004), (410, 46028), (622, 30340), (740, 25502), (820, 23014), (1244, 15170), (1480, 12751), (1517, 12440), (1555, 12136), (1640, 11507), (2488, 7585), (3034, 6220), (3110, 6068)]