20964580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11519}}^1$

素因数の和:11548

約数の個数: 48

約数和(自身を含む): 54190080

約数和(自身を除く): 33225500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11519, 23038, 46076, 57595, 80633, 115190, 149747, 161266, 230380, 299494, 322532, 403165, 598988, 748735, 806330, 1048229, 1497470, 1612660, 2096458, 2994940, 4192916, 5241145, 10482290, 20964580]

約数ペア:

[(1, 20964580), (2, 10482290), (4, 5241145), (5, 4192916), (7, 2994940), (10, 2096458), (13, 1612660), (14, 1497470), (20, 1048229), (26, 806330), (28, 748735), (35, 598988), (52, 403165), (65, 322532), (70, 299494), (91, 230380), (130, 161266), (140, 149747), (182, 115190), (260, 80633), (364, 57595), (455, 46076), (910, 23038), (1820, 11519)]