281960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:90

約数の個数: 64

約数和(自身を含む): 777600

約数和(自身を除く): 495640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 53, 56, 70, 76, 95, 106, 133, 140, 152, 190, 212, 265, 266, 280, 371, 380, 424, 530, 532, 665, 742, 760, 1007, 1060, 1064, 1330, 1484, 1855, 2014, 2120, 2660, 2968, 3710, 4028, 5035, 5320, 7049, 7420, 8056, 10070, 14098, 14840, 20140, 28196, 35245, 40280, 56392, 70490, 140980, 281960]

約数ペア:

[(1, 281960), (2, 140980), (4, 70490), (5, 56392), (7, 40280), (8, 35245), (10, 28196), (14, 20140), (19, 14840), (20, 14098), (28, 10070), (35, 8056), (38, 7420), (40, 7049), (53, 5320), (56, 5035), (70, 4028), (76, 3710), (95, 2968), (106, 2660), (133, 2120), (140, 2014), (152, 1855), (190, 1484), (212, 1330), (265, 1064), (266, 1060), (280, 1007), (371, 760), (380, 742), (424, 665), (530, 532)]