81458560

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7487}}^1$

素因数の和:7523

約数の個数: 64

約数和(自身を含む): 206219520

約数和(自身を除く): 124760960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2176, 2720, 5440, 7487, 10880, 14974, 29948, 37435, 59896, 74870, 119792, 127279, 149740, 239584, 254558, 299480, 479168, 509116, 598960, 636395, 958336, 1018232, 1197920, 1272790, 2036464, 2395840, 2545580, 4072928, 4791680, 5091160, 8145856, 10182320, 16291712, 20364640, 40729280, 81458560]

約数ペア:

[(1, 81458560), (2, 40729280), (4, 20364640), (5, 16291712), (8, 10182320), (10, 8145856), (16, 5091160), (17, 4791680), (20, 4072928), (32, 2545580), (34, 2395840), (40, 2036464), (64, 1272790), (68, 1197920), (80, 1018232), (85, 958336), (128, 636395), (136, 598960), (160, 509116), (170, 479168), (272, 299480), (320, 254558), (340, 239584), (544, 149740), (640, 127279), (680, 119792), (1088, 74870), (1360, 59896), (2176, 37435), (2720, 29948), (5440, 14974), (7487, 10880)]