669181280

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{21017}}^1$

素因数の和:21231

約数の個数: 48

約数和(自身を含む): 1588960800

約数和(自身を除く): 919779520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 15920, 21017, 31840, 42034, 84068, 105085, 168136, 210170, 336272, 420340, 672544, 840680, 1681360, 3362720, 4182383, 8364766, 16729532, 20911915, 33459064, 41823830, 66918128, 83647660, 133836256, 167295320, 334590640, 669181280]

約数ペア:

[(1, 669181280), (2, 334590640), (4, 167295320), (5, 133836256), (8, 83647660), (10, 66918128), (16, 41823830), (20, 33459064), (32, 20911915), (40, 16729532), (80, 8364766), (160, 4182383), (199, 3362720), (398, 1681360), (796, 840680), (995, 672544), (1592, 420340), (1990, 336272), (3184, 210170), (3980, 168136), (6368, 105085), (7960, 84068), (15920, 42034), (21017, 31840)]