51397720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{587}}^1$

素因数の和:808

約数の個数: 64

約数和(自身を含む): 127008000

約数和(自身を除く): 75610280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 199, 220, 398, 440, 587, 796, 995, 1174, 1592, 1990, 2189, 2348, 2935, 3980, 4378, 4696, 5870, 6457, 7960, 8756, 10945, 11740, 12914, 17512, 21890, 23480, 25828, 32285, 43780, 51656, 64570, 87560, 116813, 129140, 233626, 258280, 467252, 584065, 934504, 1168130, 1284943, 2336260, 2569886, 4672520, 5139772, 6424715, 10279544, 12849430, 25698860, 51397720]

約数ペア:

[(1, 51397720), (2, 25698860), (4, 12849430), (5, 10279544), (8, 6424715), (10, 5139772), (11, 4672520), (20, 2569886), (22, 2336260), (40, 1284943), (44, 1168130), (55, 934504), (88, 584065), (110, 467252), (199, 258280), (220, 233626), (398, 129140), (440, 116813), (587, 87560), (796, 64570), (995, 51656), (1174, 43780), (1592, 32285), (1990, 25828), (2189, 23480), (2348, 21890), (2935, 17512), (3980, 12914), (4378, 11740), (4696, 10945), (5870, 8756), (6457, 7960)]