21642748

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 20128772

約数列:

[1, 2, 4, 19, 38, 47, 73, 76, 83, 94, 146, 166, 188, 292, 332, 893, 1387, 1577, 1786, 2774, 3154, 3431, 3572, 3901, 5548, 6059, 6308, 6862, 7802, 12118, 13724, 15604, 24236, 65189, 74119, 115121, 130378, 148238, 230242, 260756, 284773, 296476, 460484, 569546, 1139092, 5410687, 10821374, 21642748]

約数ペア:

[(1, 21642748), (2, 10821374), (4, 5410687), (19, 1139092), (38, 569546), (47, 460484), (73, 296476), (76, 284773), (83, 260756), (94, 230242), (146, 148238), (166, 130378), (188, 115121), (292, 74119), (332, 65189), (893, 24236), (1387, 15604), (1577, 13724), (1786, 12118), (2774, 7802), (3154, 6862), (3431, 6308), (3572, 6059), (3901, 5548)]