19916931716

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1\times {\mathrm{6301}}^1$

素因数の和:6553

約数の個数: 72

約数和(自身を含む): 40337841600

約数和(自身を除く): 20420909884

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 199, 209, 361, 398, 418, 722, 796, 836, 1444, 2189, 3781, 3971, 4378, 6301, 7562, 7942, 8756, 12602, 15124, 15884, 25204, 41591, 69311, 71839, 83182, 119719, 138622, 143678, 166364, 239438, 277244, 287356, 478876, 790229, 1253899, 1316909, 1580458, 2274661, 2507798, 2633818, 3160916, 4549322, 5015596, 5267636, 9098644, 13792889, 23824081, 25021271, 27585778, 47648162, 50042542, 55171556, 95296324, 100085084, 262064891, 452657539, 524129782, 905315078, 1048259564, 1810630156, 4979232929, 9958465858, 19916931716]

約数ペア:

[(1, 19916931716), (2, 9958465858), (4, 4979232929), (11, 1810630156), (19, 1048259564), (22, 905315078), (38, 524129782), (44, 452657539), (76, 262064891), (199, 100085084), (209, 95296324), (361, 55171556), (398, 50042542), (418, 47648162), (722, 27585778), (796, 25021271), (836, 23824081), (1444, 13792889), (2189, 9098644), (3781, 5267636), (3971, 5015596), (4378, 4549322), (6301, 3160916), (7562, 2633818), (7942, 2507798), (8756, 2274661), (12602, 1580458), (15124, 1316909), (15884, 1253899), (25204, 790229), (41591, 478876), (69311, 287356), (71839, 277244), (83182, 239438), (119719, 166364), (138622, 143678)]