161991368

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:571

約数の個数: 128

約数和(自身を含む): 414720000

約数和(自身を除く): 252728632

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 31, 34, 44, 56, 62, 68, 77, 88, 119, 124, 136, 154, 187, 217, 238, 248, 308, 341, 374, 434, 476, 499, 527, 616, 682, 748, 868, 952, 998, 1054, 1309, 1364, 1496, 1736, 1996, 2108, 2387, 2618, 2728, 3493, 3689, 3992, 4216, 4774, 5236, 5489, 5797, 6986, 7378, 8483, 9548, 10472, 10978, 11594, 13972, 14756, 15469, 16966, 19096, 21956, 23188, 27944, 29512, 30938, 33932, 38423, 40579, 43912, 46376, 59381, 61876, 67864, 76846, 81158, 93313, 108283, 118762, 123752, 153692, 162316, 170159, 186626, 216566, 237524, 262973, 307384, 324632, 340318, 373252, 433132, 475048, 525946, 653191, 680636, 746504, 866264, 1051892, 1191113, 1306382, 1361272, 1840811, 2103784, 2382226, 2612764, 2892703, 3681622, 4764452, 5225528, 5785406, 7363244, 9528904, 11570812, 14726488, 20248921, 23141624, 40497842, 80995684, 161991368]

約数ペア:

[(1, 161991368), (2, 80995684), (4, 40497842), (7, 23141624), (8, 20248921), (11, 14726488), (14, 11570812), (17, 9528904), (22, 7363244), (28, 5785406), (31, 5225528), (34, 4764452), (44, 3681622), (56, 2892703), (62, 2612764), (68, 2382226), (77, 2103784), (88, 1840811), (119, 1361272), (124, 1306382), (136, 1191113), (154, 1051892), (187, 866264), (217, 746504), (238, 680636), (248, 653191), (308, 525946), (341, 475048), (374, 433132), (434, 373252), (476, 340318), (499, 324632), (527, 307384), (616, 262973), (682, 237524), (748, 216566), (868, 186626), (952, 170159), (998, 162316), (1054, 153692), (1309, 123752), (1364, 118762), (1496, 108283), (1736, 93313), (1996, 81158), (2108, 76846), (2387, 67864), (2618, 61876), (2728, 59381), (3493, 46376), (3689, 43912), (3992, 40579), (4216, 38423), (4774, 33932), (5236, 30938), (5489, 29512), (5797, 27944), (6986, 23188), (7378, 21956), (8483, 19096), (9548, 16966), (10472, 15469), (10978, 14756), (11594, 13972)]