12120020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{619}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 28123200

約数和(自身を除く): 16003180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 619, 890, 979, 1238, 1780, 1958, 2476, 3095, 3916, 4895, 6190, 6809, 9790, 12380, 13618, 19580, 27236, 34045, 55091, 68090, 110182, 136180, 220364, 275455, 550910, 606001, 1101820, 1212002, 2424004, 3030005, 6060010, 12120020]

約数ペア:

[(1, 12120020), (2, 6060010), (4, 3030005), (5, 2424004), (10, 1212002), (11, 1101820), (20, 606001), (22, 550910), (44, 275455), (55, 220364), (89, 136180), (110, 110182), (178, 68090), (220, 55091), (356, 34045), (445, 27236), (619, 19580), (890, 13618), (979, 12380), (1238, 9790), (1780, 6809), (1958, 6190), (2476, 4895), (3095, 3916)]