127680880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:674

約数の個数: 80

約数和(自身を含む): 316479744

約数和(自身を除く): 188798864

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 223, 272, 340, 421, 446, 680, 842, 892, 1115, 1360, 1684, 1784, 2105, 2230, 3368, 3568, 3791, 4210, 4460, 6736, 7157, 7582, 8420, 8920, 14314, 15164, 16840, 17840, 18955, 28628, 30328, 33680, 35785, 37910, 57256, 60656, 71570, 75820, 93883, 114512, 143140, 151640, 187766, 286280, 303280, 375532, 469415, 572560, 751064, 938830, 1502128, 1596011, 1877660, 3192022, 3755320, 6384044, 7510640, 7980055, 12768088, 15960110, 25536176, 31920220, 63840440, 127680880]

約数ペア:

[(1, 127680880), (2, 63840440), (4, 31920220), (5, 25536176), (8, 15960110), (10, 12768088), (16, 7980055), (17, 7510640), (20, 6384044), (34, 3755320), (40, 3192022), (68, 1877660), (80, 1596011), (85, 1502128), (136, 938830), (170, 751064), (223, 572560), (272, 469415), (340, 375532), (421, 303280), (446, 286280), (680, 187766), (842, 151640), (892, 143140), (1115, 114512), (1360, 93883), (1684, 75820), (1784, 71570), (2105, 60656), (2230, 57256), (3368, 37910), (3568, 35785), (3791, 33680), (4210, 30328), (4460, 28628), (6736, 18955), (7157, 17840), (7582, 16840), (8420, 15164), (8920, 14314)]