81170920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1511}}^1$

素因数の和:1618

約数の個数: 64

約数和(自身を含む): 195955200

約数和(自身を除く): 114784280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 395, 632, 680, 790, 1343, 1511, 1580, 2686, 3022, 3160, 5372, 6044, 6715, 7555, 10744, 12088, 13430, 15110, 25687, 26860, 30220, 51374, 53720, 60440, 102748, 119369, 128435, 205496, 238738, 256870, 477476, 513740, 596845, 954952, 1027480, 1193690, 2029273, 2387380, 4058546, 4774760, 8117092, 10146365, 16234184, 20292730, 40585460, 81170920]

約数ペア:

[(1, 81170920), (2, 40585460), (4, 20292730), (5, 16234184), (8, 10146365), (10, 8117092), (17, 4774760), (20, 4058546), (34, 2387380), (40, 2029273), (68, 1193690), (79, 1027480), (85, 954952), (136, 596845), (158, 513740), (170, 477476), (316, 256870), (340, 238738), (395, 205496), (632, 128435), (680, 119369), (790, 102748), (1343, 60440), (1511, 53720), (1580, 51374), (2686, 30220), (3022, 26860), (3160, 25687), (5372, 15110), (6044, 13430), (6715, 12088), (7555, 10744)]