68821720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2203}}^1$

素因数の和:2296

約数の個数: 64

約数和(自身を含む): 171383040

約数和(自身を除く): 102561320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2203, 2840, 3124, 3905, 4406, 6248, 7810, 8812, 11015, 15620, 17624, 22030, 24233, 31240, 44060, 48466, 88120, 96932, 121165, 156413, 193864, 242330, 312826, 484660, 625652, 782065, 969320, 1251304, 1564130, 1720543, 3128260, 3441086, 6256520, 6882172, 8602715, 13764344, 17205430, 34410860, 68821720]

約数ペア:

[(1, 68821720), (2, 34410860), (4, 17205430), (5, 13764344), (8, 8602715), (10, 6882172), (11, 6256520), (20, 3441086), (22, 3128260), (40, 1720543), (44, 1564130), (55, 1251304), (71, 969320), (88, 782065), (110, 625652), (142, 484660), (220, 312826), (284, 242330), (355, 193864), (440, 156413), (568, 121165), (710, 96932), (781, 88120), (1420, 48466), (1562, 44060), (2203, 31240), (2840, 24233), (3124, 22030), (3905, 17624), (4406, 15620), (6248, 11015), (7810, 8812)]