18938205

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 40360320

約数和(自身を除く): 21422115

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 81, 99, 109, 117, 135, 143, 165, 195, 243, 297, 327, 351, 405, 429, 495, 545, 585, 715, 891, 981, 1053, 1199, 1215, 1287, 1417, 1485, 1635, 1755, 2145, 2673, 2943, 3159, 3597, 3861, 4251, 4455, 4905, 5265, 5995, 6435, 7085, 8829, 10791, 11583, 12753, 13365, 14715, 15587, 15795, 17985, 19305, 21255, 26487, 32373, 34749, 38259, 44145, 46761, 53955, 57915, 63765, 77935, 97119, 114777, 132435, 140283, 161865, 173745, 191295, 233805, 291357, 344331, 420849, 485595, 573885, 701415, 1262547, 1456785, 1721655, 2104245, 3787641, 6312735, 18938205]

約数ペア:

[(1, 18938205), (3, 6312735), (5, 3787641), (9, 2104245), (11, 1721655), (13, 1456785), (15, 1262547), (27, 701415), (33, 573885), (39, 485595), (45, 420849), (55, 344331), (65, 291357), (81, 233805), (99, 191295), (109, 173745), (117, 161865), (135, 140283), (143, 132435), (165, 114777), (195, 97119), (243, 77935), (297, 63765), (327, 57915), (351, 53955), (405, 46761), (429, 44145), (495, 38259), (545, 34749), (585, 32373), (715, 26487), (891, 21255), (981, 19305), (1053, 17985), (1199, 15795), (1215, 15587), (1287, 14715), (1417, 13365), (1485, 12753), (1635, 11583), (1755, 10791), (2145, 8829), (2673, 7085), (2943, 6435), (3159, 5995), (3597, 5265), (3861, 4905), (4251, 4455)]