21640506

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 46597824

約数和(自身を除く): 24957318

約数列:

[1, 2, 3, 6, 19, 38, 57, 97, 103, 114, 194, 206, 291, 309, 361, 582, 618, 722, 1083, 1843, 1957, 2166, 3686, 3914, 5529, 5871, 9991, 11058, 11742, 19982, 29973, 35017, 37183, 59946, 70034, 74366, 105051, 111549, 189829, 210102, 223098, 379658, 569487, 1138974, 3606751, 7213502, 10820253, 21640506]

約数ペア:

[(1, 21640506), (2, 10820253), (3, 7213502), (6, 3606751), (19, 1138974), (38, 569487), (57, 379658), (97, 223098), (103, 210102), (114, 189829), (194, 111549), (206, 105051), (291, 74366), (309, 70034), (361, 59946), (582, 37183), (618, 35017), (722, 29973), (1083, 19982), (1843, 11742), (1957, 11058), (2166, 9991), (3686, 5871), (3914, 5529)]