20189996140

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1\times {\mathrm{313}}^1$

素因数の和:779

約数の個数: 96

約数和(自身を含む): 43434308736

約数和(自身を除く): 23244312596

約数列:

[1, 2, 4, 5, 10, 20, 103, 173, 181, 206, 313, 346, 362, 412, 515, 626, 692, 724, 865, 905, 1030, 1252, 1565, 1730, 1810, 2060, 3130, 3460, 3620, 6260, 17819, 18643, 31313, 32239, 35638, 37286, 54149, 56653, 62626, 64478, 71276, 74572, 89095, 93215, 108298, 113306, 125252, 128956, 156565, 161195, 178190, 186430, 216596, 226612, 270745, 283265, 313130, 322390, 356380, 372860, 541490, 566530, 626260, 644780, 1082980, 1133060, 3225239, 5577347, 5835259, 6450478, 9800969, 11154694, 11670518, 12900956, 16126195, 19601938, 22309388, 23341036, 27886735, 29176295, 32252390, 39203876, 49004845, 55773470, 58352590, 64504780, 98009690, 111546940, 116705180, 196019380, 1009499807, 2018999614, 4037999228, 5047499035, 10094998070, 20189996140]

約数ペア:

[(1, 20189996140), (2, 10094998070), (4, 5047499035), (5, 4037999228), (10, 2018999614), (20, 1009499807), (103, 196019380), (173, 116705180), (181, 111546940), (206, 98009690), (313, 64504780), (346, 58352590), (362, 55773470), (412, 49004845), (515, 39203876), (626, 32252390), (692, 29176295), (724, 27886735), (865, 23341036), (905, 22309388), (1030, 19601938), (1252, 16126195), (1565, 12900956), (1730, 11670518), (1810, 11154694), (2060, 9800969), (3130, 6450478), (3460, 5835259), (3620, 5577347), (6260, 3225239), (17819, 1133060), (18643, 1082980), (31313, 644780), (32239, 626260), (35638, 566530), (37286, 541490), (54149, 372860), (56653, 356380), (62626, 322390), (64478, 313130), (71276, 283265), (74572, 270745), (89095, 226612), (93215, 216596), (108298, 186430), (113306, 178190), (125252, 161195), (128956, 156565)]