21102795

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 43453440

約数和(自身を除く): 22350645

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 137, 163, 189, 315, 411, 489, 685, 815, 945, 959, 1141, 1233, 1467, 2055, 2445, 2877, 3423, 3699, 4401, 4795, 5705, 6165, 7335, 8631, 10269, 14385, 17115, 18495, 22005, 22331, 25893, 30807, 43155, 51345, 66993, 111655, 129465, 154035, 156317, 200979, 334965, 468951, 602937, 781585, 1004895, 1406853, 2344755, 3014685, 4220559, 7034265, 21102795]

約数ペア:

[(1, 21102795), (3, 7034265), (5, 4220559), (7, 3014685), (9, 2344755), (15, 1406853), (21, 1004895), (27, 781585), (35, 602937), (45, 468951), (63, 334965), (105, 200979), (135, 156317), (137, 154035), (163, 129465), (189, 111655), (315, 66993), (411, 51345), (489, 43155), (685, 30807), (815, 25893), (945, 22331), (959, 22005), (1141, 18495), (1233, 17115), (1467, 14385), (2055, 10269), (2445, 8631), (2877, 7335), (3423, 6165), (3699, 5705), (4401, 4795)]