28785540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9791}}^1$

素因数の和:9817

約数の個数: 72

約数和(自身を含む): 93768192

約数和(自身を除く): 64982652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9791, 19582, 29373, 39164, 48955, 58746, 68537, 97910, 117492, 137074, 146865, 195820, 205611, 274148, 293730, 342685, 411222, 479759, 587460, 685370, 822444, 959518, 1028055, 1370740, 1439277, 1919036, 2056110, 2398795, 2878554, 4112220, 4797590, 5757108, 7196385, 9595180, 14392770, 28785540]

約数ペア:

[(1, 28785540), (2, 14392770), (3, 9595180), (4, 7196385), (5, 5757108), (6, 4797590), (7, 4112220), (10, 2878554), (12, 2398795), (14, 2056110), (15, 1919036), (20, 1439277), (21, 1370740), (28, 1028055), (30, 959518), (35, 822444), (42, 685370), (49, 587460), (60, 479759), (70, 411222), (84, 342685), (98, 293730), (105, 274148), (140, 205611), (147, 195820), (196, 146865), (210, 137074), (245, 117492), (294, 97910), (420, 68537), (490, 58746), (588, 48955), (735, 39164), (980, 29373), (1470, 19582), (2940, 9791)]