77760040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{661}}^1$

素因数の和:862

約数の個数: 64

約数和(自身を含む): 186604560

約数和(自身を除く): 108844520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 173, 340, 346, 661, 680, 692, 865, 1322, 1384, 1730, 2644, 2941, 3305, 3460, 5288, 5882, 6610, 6920, 11237, 11764, 13220, 14705, 22474, 23528, 26440, 29410, 44948, 56185, 58820, 89896, 112370, 114353, 117640, 224740, 228706, 449480, 457412, 571765, 914824, 1143530, 1944001, 2287060, 3888002, 4574120, 7776004, 9720005, 15552008, 19440010, 38880020, 77760040]

約数ペア:

[(1, 77760040), (2, 38880020), (4, 19440010), (5, 15552008), (8, 9720005), (10, 7776004), (17, 4574120), (20, 3888002), (34, 2287060), (40, 1944001), (68, 1143530), (85, 914824), (136, 571765), (170, 457412), (173, 449480), (340, 228706), (346, 224740), (661, 117640), (680, 114353), (692, 112370), (865, 89896), (1322, 58820), (1384, 56185), (1730, 44948), (2644, 29410), (2941, 26440), (3305, 23528), (3460, 22474), (5288, 14705), (5882, 13220), (6610, 11764), (6920, 11237)]