20100860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 48268080

約数和(自身を除く): 28167220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 313, 338, 380, 494, 626, 676, 845, 988, 1235, 1252, 1565, 1690, 2470, 3130, 3211, 3380, 4069, 4940, 5947, 6260, 6422, 8138, 11894, 12844, 16055, 16276, 20345, 23788, 29735, 32110, 40690, 52897, 59470, 64220, 77311, 81380, 105794, 118940, 154622, 211588, 264485, 309244, 386555, 528970, 773110, 1005043, 1057940, 1546220, 2010086, 4020172, 5025215, 10050430, 20100860]

約数ペア:

[(1, 20100860), (2, 10050430), (4, 5025215), (5, 4020172), (10, 2010086), (13, 1546220), (19, 1057940), (20, 1005043), (26, 773110), (38, 528970), (52, 386555), (65, 309244), (76, 264485), (95, 211588), (130, 154622), (169, 118940), (190, 105794), (247, 81380), (260, 77311), (313, 64220), (338, 59470), (380, 52897), (494, 40690), (626, 32110), (676, 29735), (845, 23788), (988, 20345), (1235, 16276), (1252, 16055), (1565, 12844), (1690, 11894), (2470, 8138), (3130, 6422), (3211, 6260), (3380, 5947), (4069, 4940)]