261287460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{207371}}^1$

素因数の和:207393

約数の個数: 72

約数和(自身を含む): 905800896

約数和(自身を除く): 644513436

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 207371, 414742, 622113, 829484, 1036855, 1244226, 1451597, 1866339, 2073710, 2488452, 2903194, 3110565, 3732678, 4147420, 4354791, 5806388, 6221130, 7257985, 7465356, 8709582, 9331695, 12442260, 13064373, 14515970, 17419164, 18663390, 21773955, 26128746, 29031940, 37326780, 43547910, 52257492, 65321865, 87095820, 130643730, 261287460]

約数ペア:

[(1, 261287460), (2, 130643730), (3, 87095820), (4, 65321865), (5, 52257492), (6, 43547910), (7, 37326780), (9, 29031940), (10, 26128746), (12, 21773955), (14, 18663390), (15, 17419164), (18, 14515970), (20, 13064373), (21, 12442260), (28, 9331695), (30, 8709582), (35, 7465356), (36, 7257985), (42, 6221130), (45, 5806388), (60, 4354791), (63, 4147420), (70, 3732678), (84, 3110565), (90, 2903194), (105, 2488452), (126, 2073710), (140, 1866339), (180, 1451597), (210, 1244226), (252, 1036855), (315, 829484), (420, 622113), (630, 414742), (1260, 207371)]