18906615

素因数分解:

$3^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:65

約数の個数: 128

約数和(自身を含む): 44083200

約数和(自身を除く): 25176585

約数列:

[1, 3, 5, 7, 9, 13, 15, 19, 21, 27, 35, 39, 45, 57, 63, 65, 81, 91, 95, 105, 117, 133, 135, 171, 189, 195, 243, 247, 273, 285, 315, 351, 399, 405, 455, 513, 567, 585, 665, 729, 741, 819, 855, 945, 1053, 1197, 1215, 1235, 1365, 1539, 1701, 1729, 1755, 1995, 2187, 2223, 2457, 2565, 2835, 3159, 3591, 3645, 3705, 4095, 4617, 5103, 5187, 5265, 5985, 6669, 7371, 7695, 8505, 8645, 9477, 10773, 10935, 11115, 12285, 13851, 15309, 15561, 15795, 17955, 20007, 22113, 23085, 25515, 25935, 28431, 32319, 33345, 36855, 41553, 46683, 47385, 53865, 60021, 66339, 69255, 76545, 77805, 96957, 100035, 110565, 140049, 142155, 161595, 180063, 199017, 207765, 233415, 290871, 300105, 331695, 420147, 484785, 540189, 700245, 900315, 995085, 1260441, 1454355, 2100735, 2700945, 3781323, 6302205, 18906615]

約数ペア:

[(1, 18906615), (3, 6302205), (5, 3781323), (7, 2700945), (9, 2100735), (13, 1454355), (15, 1260441), (19, 995085), (21, 900315), (27, 700245), (35, 540189), (39, 484785), (45, 420147), (57, 331695), (63, 300105), (65, 290871), (81, 233415), (91, 207765), (95, 199017), (105, 180063), (117, 161595), (133, 142155), (135, 140049), (171, 110565), (189, 100035), (195, 96957), (243, 77805), (247, 76545), (273, 69255), (285, 66339), (315, 60021), (351, 53865), (399, 47385), (405, 46683), (455, 41553), (513, 36855), (567, 33345), (585, 32319), (665, 28431), (729, 25935), (741, 25515), (819, 23085), (855, 22113), (945, 20007), (1053, 17955), (1197, 15795), (1215, 15561), (1235, 15309), (1365, 13851), (1539, 12285), (1701, 11115), (1729, 10935), (1755, 10773), (1995, 9477), (2187, 8645), (2223, 8505), (2457, 7695), (2565, 7371), (2835, 6669), (3159, 5985), (3591, 5265), (3645, 5187), (3705, 5103), (4095, 4617)]