19968472

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 42184800

約数和(自身を除く): 22216328

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 61, 68, 83, 116, 122, 136, 166, 232, 244, 332, 488, 493, 664, 986, 1037, 1411, 1769, 1972, 2074, 2407, 2822, 3538, 3944, 4148, 4814, 5063, 5644, 7076, 8296, 9628, 10126, 11288, 14152, 19256, 20252, 30073, 40504, 40919, 60146, 81838, 86071, 120292, 146827, 163676, 172142, 240584, 293654, 327352, 344284, 587308, 688568, 1174616, 2496059, 4992118, 9984236, 19968472]

約数ペア:

[(1, 19968472), (2, 9984236), (4, 4992118), (8, 2496059), (17, 1174616), (29, 688568), (34, 587308), (58, 344284), (61, 327352), (68, 293654), (83, 240584), (116, 172142), (122, 163676), (136, 146827), (166, 120292), (232, 86071), (244, 81838), (332, 60146), (488, 40919), (493, 40504), (664, 30073), (986, 20252), (1037, 19256), (1411, 14152), (1769, 11288), (1972, 10126), (2074, 9628), (2407, 8296), (2822, 7076), (3538, 5644), (3944, 5063), (4148, 4814)]