256988340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{29137}}^1$

素因数の和:29166

約数の個数: 108

約数和(自身を含む): 906832836

約数和(自身を除く): 649844496

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 29137, 58274, 87411, 116548, 145685, 174822, 203959, 262233, 291370, 349644, 407918, 437055, 524466, 582740, 611877, 815836, 874110, 1019795, 1048932, 1223754, 1311165, 1427713, 1748220, 1835631, 2039590, 2447508, 2622330, 2855426, 3059385, 3671262, 4079180, 4283139, 5244660, 5710852, 6118770, 7138565, 7342524, 8566278, 9178155, 12237540, 12849417, 14277130, 17132556, 18356310, 21415695, 25698834, 28554260, 36712620, 42831390, 51397668, 64247085, 85662780, 128494170, 256988340]

約数ペア:

[(1, 256988340), (2, 128494170), (3, 85662780), (4, 64247085), (5, 51397668), (6, 42831390), (7, 36712620), (9, 28554260), (10, 25698834), (12, 21415695), (14, 18356310), (15, 17132556), (18, 14277130), (20, 12849417), (21, 12237540), (28, 9178155), (30, 8566278), (35, 7342524), (36, 7138565), (42, 6118770), (45, 5710852), (49, 5244660), (60, 4283139), (63, 4079180), (70, 3671262), (84, 3059385), (90, 2855426), (98, 2622330), (105, 2447508), (126, 2039590), (140, 1835631), (147, 1748220), (180, 1427713), (196, 1311165), (210, 1223754), (245, 1048932), (252, 1019795), (294, 874110), (315, 815836), (420, 611877), (441, 582740), (490, 524466), (588, 437055), (630, 407918), (735, 349644), (882, 291370), (980, 262233), (1260, 203959), (1470, 174822), (1764, 145685), (2205, 116548), (2940, 87411), (4410, 58274), (8820, 29137)]