19997304

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2131}}^1$

素因数の和:2180

約数の個数: 64

約数和(自身を含む): 55261440

約数和(自身を除く): 35264136

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 23, 24, 34, 46, 51, 68, 69, 92, 102, 136, 138, 184, 204, 276, 391, 408, 552, 782, 1173, 1564, 2131, 2346, 3128, 4262, 4692, 6393, 8524, 9384, 12786, 17048, 25572, 36227, 49013, 51144, 72454, 98026, 108681, 144908, 147039, 196052, 217362, 289816, 294078, 392104, 434724, 588156, 833221, 869448, 1176312, 1666442, 2499663, 3332884, 4999326, 6665768, 9998652, 19997304]

約数ペア:

[(1, 19997304), (2, 9998652), (3, 6665768), (4, 4999326), (6, 3332884), (8, 2499663), (12, 1666442), (17, 1176312), (23, 869448), (24, 833221), (34, 588156), (46, 434724), (51, 392104), (68, 294078), (69, 289816), (92, 217362), (102, 196052), (136, 147039), (138, 144908), (184, 108681), (204, 98026), (276, 72454), (391, 51144), (408, 49013), (552, 36227), (782, 25572), (1173, 17048), (1564, 12786), (2131, 9384), (2346, 8524), (3128, 6393), (4262, 4692)]