19013720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 47347200

約数和(自身を除く): 28333480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 547, 632, 790, 869, 1094, 1580, 1738, 2188, 2735, 3160, 3476, 4345, 4376, 5470, 6017, 6952, 8690, 10940, 12034, 17380, 21880, 24068, 30085, 34760, 43213, 48136, 60170, 86426, 120340, 172852, 216065, 240680, 345704, 432130, 475343, 864260, 950686, 1728520, 1901372, 2376715, 3802744, 4753430, 9506860, 19013720]

約数ペア:

[(1, 19013720), (2, 9506860), (4, 4753430), (5, 3802744), (8, 2376715), (10, 1901372), (11, 1728520), (20, 950686), (22, 864260), (40, 475343), (44, 432130), (55, 345704), (79, 240680), (88, 216065), (110, 172852), (158, 120340), (220, 86426), (316, 60170), (395, 48136), (440, 43213), (547, 34760), (632, 30085), (790, 24068), (869, 21880), (1094, 17380), (1580, 12034), (1738, 10940), (2188, 8690), (2735, 6952), (3160, 6017), (3476, 5470), (4345, 4376)]