31991355

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 64399104

約数和(自身を除く): 32407749

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 43, 45, 55, 81, 99, 129, 135, 165, 167, 215, 297, 387, 405, 473, 495, 501, 645, 835, 891, 1161, 1419, 1485, 1503, 1837, 1935, 2365, 2505, 3483, 4257, 4455, 4509, 5511, 5805, 7095, 7181, 7515, 9185, 12771, 13527, 16533, 17415, 21285, 21543, 22545, 27555, 35905, 38313, 49599, 63855, 64629, 67635, 78991, 82665, 107715, 148797, 191565, 193887, 236973, 247995, 323145, 394955, 581661, 710919, 743985, 969435, 1184865, 2132757, 2908305, 3554595, 6398271, 10663785, 31991355]

約数ペア:

[(1, 31991355), (3, 10663785), (5, 6398271), (9, 3554595), (11, 2908305), (15, 2132757), (27, 1184865), (33, 969435), (43, 743985), (45, 710919), (55, 581661), (81, 394955), (99, 323145), (129, 247995), (135, 236973), (165, 193887), (167, 191565), (215, 148797), (297, 107715), (387, 82665), (405, 78991), (473, 67635), (495, 64629), (501, 63855), (645, 49599), (835, 38313), (891, 35905), (1161, 27555), (1419, 22545), (1485, 21543), (1503, 21285), (1837, 17415), (1935, 16533), (2365, 13527), (2505, 12771), (3483, 9185), (4257, 7515), (4455, 7181), (4509, 7095), (5511, 5805)]