78880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:61

約数の個数: 48

約数和(自身を含む): 204120

約数和(自身を除く): 125240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 68, 80, 85, 116, 136, 145, 160, 170, 232, 272, 290, 340, 464, 493, 544, 580, 680, 928, 986, 1160, 1360, 1972, 2320, 2465, 2720, 3944, 4640, 4930, 7888, 9860, 15776, 19720, 39440, 78880]

約数ペア:

[(1, 78880), (2, 39440), (4, 19720), (5, 15776), (8, 9860), (10, 7888), (16, 4930), (17, 4640), (20, 3944), (29, 2720), (32, 2465), (34, 2320), (40, 1972), (58, 1360), (68, 1160), (80, 986), (85, 928), (116, 680), (136, 580), (145, 544), (160, 493), (170, 464), (232, 340), (272, 290)]