2005254940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{19427}}^1$

素因数の和:19846

約数の個数: 48

約数和(自身を含む): 4546618272

約数和(自身を除く): 2541363332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 397, 794, 1588, 1985, 3970, 5161, 7940, 10322, 19427, 20644, 25805, 38854, 51610, 77708, 97135, 103220, 194270, 252551, 388540, 505102, 1010204, 1262755, 2525510, 5051020, 7712519, 15425038, 30850076, 38562595, 77125190, 100262747, 154250380, 200525494, 401050988, 501313735, 1002627470, 2005254940]

約数ペア:

[(1, 2005254940), (2, 1002627470), (4, 501313735), (5, 401050988), (10, 200525494), (13, 154250380), (20, 100262747), (26, 77125190), (52, 38562595), (65, 30850076), (130, 15425038), (260, 7712519), (397, 5051020), (794, 2525510), (1588, 1262755), (1985, 1010204), (3970, 505102), (5161, 388540), (7940, 252551), (10322, 194270), (19427, 103220), (20644, 97135), (25805, 77708), (38854, 51610)]