26568280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 64152000

約数和(自身を除く): 37583720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 340, 356, 439, 445, 680, 712, 878, 890, 1513, 1756, 1780, 2195, 3026, 3512, 3560, 4390, 6052, 7463, 7565, 8780, 12104, 14926, 15130, 17560, 29852, 30260, 37315, 39071, 59704, 60520, 74630, 78142, 149260, 156284, 195355, 298520, 312568, 390710, 664207, 781420, 1328414, 1562840, 2656828, 3321035, 5313656, 6642070, 13284140, 26568280]

約数ペア:

[(1, 26568280), (2, 13284140), (4, 6642070), (5, 5313656), (8, 3321035), (10, 2656828), (17, 1562840), (20, 1328414), (34, 781420), (40, 664207), (68, 390710), (85, 312568), (89, 298520), (136, 195355), (170, 156284), (178, 149260), (340, 78142), (356, 74630), (439, 60520), (445, 59704), (680, 39071), (712, 37315), (878, 30260), (890, 29852), (1513, 17560), (1756, 15130), (1780, 14926), (2195, 12104), (3026, 8780), (3512, 7565), (3560, 7463), (4390, 6052)]