19999096

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 44100000

約数和(自身を除く): 24100904

約数列:

[1, 2, 4, 8, 13, 19, 26, 29, 38, 52, 58, 76, 104, 116, 152, 232, 247, 349, 377, 494, 551, 698, 754, 988, 1102, 1396, 1508, 1976, 2204, 2792, 3016, 4408, 4537, 6631, 7163, 9074, 10121, 13262, 14326, 18148, 20242, 26524, 28652, 36296, 40484, 53048, 57304, 80968, 86203, 131573, 172406, 192299, 263146, 344812, 384598, 526292, 689624, 769196, 1052584, 1538392, 2499887, 4999774, 9999548, 19999096]

約数ペア:

[(1, 19999096), (2, 9999548), (4, 4999774), (8, 2499887), (13, 1538392), (19, 1052584), (26, 769196), (29, 689624), (38, 526292), (52, 384598), (58, 344812), (76, 263146), (104, 192299), (116, 172406), (152, 131573), (232, 86203), (247, 80968), (349, 57304), (377, 53048), (494, 40484), (551, 36296), (698, 28652), (754, 26524), (988, 20242), (1102, 18148), (1396, 14326), (1508, 13262), (1976, 10121), (2204, 9074), (2792, 7163), (3016, 6631), (4408, 4537)]