18908505

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 44789760

約数和(自身を除く): 25881255

約数列:

[1, 3, 5, 7, 9, 11, 15, 17, 21, 27, 33, 35, 45, 51, 55, 63, 77, 85, 99, 105, 107, 119, 135, 153, 165, 187, 189, 231, 255, 297, 315, 321, 357, 385, 459, 495, 535, 561, 595, 693, 749, 765, 935, 945, 963, 1071, 1155, 1177, 1309, 1485, 1605, 1683, 1785, 1819, 2079, 2247, 2295, 2805, 2889, 3213, 3465, 3531, 3745, 3927, 4815, 5049, 5355, 5457, 5885, 6545, 6741, 8239, 8415, 9095, 10395, 10593, 11235, 11781, 12733, 14445, 16065, 16371, 17655, 19635, 20009, 20223, 24717, 25245, 27285, 31779, 33705, 35343, 38199, 41195, 49113, 52965, 58905, 60027, 63665, 74151, 81855, 100045, 101115, 114597, 123585, 140063, 158895, 176715, 180081, 190995, 222453, 245565, 300135, 343791, 370755, 420189, 540243, 572985, 700315, 900405, 1112265, 1260567, 1718955, 2100945, 2701215, 3781701, 6302835, 18908505]

約数ペア:

[(1, 18908505), (3, 6302835), (5, 3781701), (7, 2701215), (9, 2100945), (11, 1718955), (15, 1260567), (17, 1112265), (21, 900405), (27, 700315), (33, 572985), (35, 540243), (45, 420189), (51, 370755), (55, 343791), (63, 300135), (77, 245565), (85, 222453), (99, 190995), (105, 180081), (107, 176715), (119, 158895), (135, 140063), (153, 123585), (165, 114597), (187, 101115), (189, 100045), (231, 81855), (255, 74151), (297, 63665), (315, 60027), (321, 58905), (357, 52965), (385, 49113), (459, 41195), (495, 38199), (535, 35343), (561, 33705), (595, 31779), (693, 27285), (749, 25245), (765, 24717), (935, 20223), (945, 20009), (963, 19635), (1071, 17655), (1155, 16371), (1177, 16065), (1309, 14445), (1485, 12733), (1605, 11781), (1683, 11235), (1785, 10593), (1819, 10395), (2079, 9095), (2247, 8415), (2295, 8239), (2805, 6741), (2889, 6545), (3213, 5885), (3465, 5457), (3531, 5355), (3745, 5049), (3927, 4815)]