19968540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19577}}^1$

素因数の和:19606

約数の個数: 48

約数和(自身を含む): 59203872

約数和(自身を除く): 39235332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19577, 39154, 58731, 78308, 97885, 117462, 195770, 234924, 293655, 332809, 391540, 587310, 665618, 998427, 1174620, 1331236, 1664045, 1996854, 3328090, 3993708, 4992135, 6656180, 9984270, 19968540]

約数ペア:

[(1, 19968540), (2, 9984270), (3, 6656180), (4, 4992135), (5, 3993708), (6, 3328090), (10, 1996854), (12, 1664045), (15, 1331236), (17, 1174620), (20, 998427), (30, 665618), (34, 587310), (51, 391540), (60, 332809), (68, 293655), (85, 234924), (102, 195770), (170, 117462), (204, 97885), (255, 78308), (340, 58731), (510, 39154), (1020, 19577)]