20921846913

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{51683}}^1$

素因数の和:51779

約数の個数: 64

約数和(自身を含む): 35723980800

約数和(自身を除く): 14802133887

約数列:

[1, 3, 9, 11, 27, 29, 33, 47, 87, 99, 141, 261, 297, 319, 423, 517, 783, 957, 1269, 1363, 1551, 2871, 4089, 4653, 8613, 12267, 13959, 14993, 36801, 44979, 51683, 134937, 155049, 404811, 465147, 568513, 1395441, 1498807, 1705539, 2429101, 4496421, 5116617, 7287303, 13489263, 15349851, 16486877, 21861909, 26720111, 40467789, 49460631, 65585727, 70443929, 80160333, 148381893, 211331787, 240480999, 445145679, 633995361, 721442997, 774883219, 1901986083, 2324649657, 6973948971, 20921846913]

約数ペア:

[(1, 20921846913), (3, 6973948971), (9, 2324649657), (11, 1901986083), (27, 774883219), (29, 721442997), (33, 633995361), (47, 445145679), (87, 240480999), (99, 211331787), (141, 148381893), (261, 80160333), (297, 70443929), (319, 65585727), (423, 49460631), (517, 40467789), (783, 26720111), (957, 21861909), (1269, 16486877), (1363, 15349851), (1551, 13489263), (2871, 7287303), (4089, 5116617), (4653, 4496421), (8613, 2429101), (12267, 1705539), (13959, 1498807), (14993, 1395441), (36801, 568513), (44979, 465147), (51683, 404811), (134937, 155049)]