20131271620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{221077}}^1$

素因数の和:221272

約数の個数: 48

約数和(自身を含む): 44012208240

約数和(自身を除く): 23880936620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 157, 290, 314, 580, 628, 785, 1570, 3140, 4553, 9106, 18212, 22765, 45530, 91060, 221077, 442154, 884308, 1105385, 2210770, 4421540, 6411233, 12822466, 25644932, 32056165, 34709089, 64112330, 69418178, 128224660, 138836356, 173545445, 347090890, 694181780, 1006563581, 2013127162, 4026254324, 5032817905, 10065635810, 20131271620]

約数ペア:

[(1, 20131271620), (2, 10065635810), (4, 5032817905), (5, 4026254324), (10, 2013127162), (20, 1006563581), (29, 694181780), (58, 347090890), (116, 173545445), (145, 138836356), (157, 128224660), (290, 69418178), (314, 64112330), (580, 34709089), (628, 32056165), (785, 25644932), (1570, 12822466), (3140, 6411233), (4553, 4421540), (9106, 2210770), (18212, 1105385), (22765, 884308), (45530, 442154), (91060, 221077)]