1221280

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 3061800

約数和(自身を除く): 1840520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 449, 544, 680, 898, 1360, 1796, 2245, 2720, 3592, 4490, 7184, 7633, 8980, 14368, 15266, 17960, 30532, 35920, 38165, 61064, 71840, 76330, 122128, 152660, 244256, 305320, 610640, 1221280]

約数ペア:

[(1, 1221280), (2, 610640), (4, 305320), (5, 244256), (8, 152660), (10, 122128), (16, 76330), (17, 71840), (20, 61064), (32, 38165), (34, 35920), (40, 30532), (68, 17960), (80, 15266), (85, 14368), (136, 8980), (160, 7633), (170, 7184), (272, 4490), (340, 3592), (449, 2720), (544, 2245), (680, 1796), (898, 1360)]