18742178

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 37013760

約数和(自身を除く): 18271582

約数列:

[1, 2, 7, 13, 14, 26, 29, 53, 58, 67, 91, 106, 134, 182, 203, 371, 377, 406, 469, 689, 742, 754, 871, 938, 1378, 1537, 1742, 1943, 2639, 3074, 3551, 3886, 4823, 5278, 6097, 7102, 9646, 10759, 12194, 13601, 19981, 21518, 24857, 25259, 27202, 39962, 46163, 49714, 50518, 92326, 102979, 139867, 176813, 205958, 279734, 323141, 353626, 646282, 720853, 1338727, 1441706, 2677454, 9371089, 18742178]

約数ペア:

[(1, 18742178), (2, 9371089), (7, 2677454), (13, 1441706), (14, 1338727), (26, 720853), (29, 646282), (53, 353626), (58, 323141), (67, 279734), (91, 205958), (106, 176813), (134, 139867), (182, 102979), (203, 92326), (371, 50518), (377, 49714), (406, 46163), (469, 39962), (689, 27202), (742, 25259), (754, 24857), (871, 21518), (938, 19981), (1378, 13601), (1537, 12194), (1742, 10759), (1943, 9646), (2639, 7102), (3074, 6097), (3551, 5278), (3886, 4823)]