20320196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 40877760

約数和(自身を除く): 20557564

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 131, 157, 247, 262, 314, 494, 524, 628, 988, 1703, 2041, 2489, 2983, 3406, 4082, 4978, 5966, 6812, 8164, 9956, 11932, 20567, 32357, 38779, 41134, 64714, 77558, 82268, 129428, 155116, 267371, 390773, 534742, 781546, 1069484, 1563092, 5080049, 10160098, 20320196]

約数ペア:

[(1, 20320196), (2, 10160098), (4, 5080049), (13, 1563092), (19, 1069484), (26, 781546), (38, 534742), (52, 390773), (76, 267371), (131, 155116), (157, 129428), (247, 82268), (262, 77558), (314, 64714), (494, 41134), (524, 38779), (628, 32357), (988, 20567), (1703, 11932), (2041, 9956), (2489, 8164), (2983, 6812), (3406, 5966), (4082, 4978)]