256454660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{15139}}^1$

素因数の和:15177

約数の個数: 72

約数和(自身を含む): 676576320

約数和(自身を除く): 420121660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 8470, 15139, 16940, 30278, 60556, 75695, 105973, 151390, 166529, 211946, 302780, 333058, 423892, 529865, 666116, 832645, 1059730, 1165703, 1665290, 1831819, 2119460, 2331406, 3330580, 3663638, 4662812, 5828515, 7327276, 9159095, 11657030, 12822733, 18318190, 23314060, 25645466, 36636380, 51290932, 64113665, 128227330, 256454660]

約数ペア:

[(1, 256454660), (2, 128227330), (4, 64113665), (5, 51290932), (7, 36636380), (10, 25645466), (11, 23314060), (14, 18318190), (20, 12822733), (22, 11657030), (28, 9159095), (35, 7327276), (44, 5828515), (55, 4662812), (70, 3663638), (77, 3330580), (110, 2331406), (121, 2119460), (140, 1831819), (154, 1665290), (220, 1165703), (242, 1059730), (308, 832645), (385, 666116), (484, 529865), (605, 423892), (770, 333058), (847, 302780), (1210, 211946), (1540, 166529), (1694, 151390), (2420, 105973), (3388, 75695), (4235, 60556), (8470, 30278), (15139, 16940)]