21293438720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{3917}}^1$

素因数の和:4106

約数の個数: 144

約数和(自身を含む): 53047588608

約数和(自身を除く): 31754149888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 137, 155, 160, 248, 256, 274, 310, 320, 496, 548, 620, 640, 685, 992, 1096, 1240, 1280, 1370, 1984, 2192, 2480, 2740, 3917, 3968, 4247, 4384, 4960, 5480, 7834, 7936, 8494, 8768, 9920, 10960, 15668, 16988, 17536, 19585, 19840, 21235, 21920, 31336, 33976, 35072, 39170, 39680, 42470, 43840, 62672, 67952, 78340, 84940, 87680, 121427, 125344, 135904, 156680, 169880, 175360, 242854, 250688, 271808, 313360, 339760, 485708, 501376, 536629, 543616, 607135, 626720, 679520, 971416, 1002752, 1073258, 1087232, 1214270, 1253440, 1359040, 1942832, 2146516, 2428540, 2506880, 2683145, 2718080, 3885664, 4293032, 4857080, 5013760, 5366290, 5436160, 7771328, 8586064, 9714160, 10732580, 15542656, 16635499, 17172128, 19428320, 21465160, 31085312, 33270998, 34344256, 38856640, 42930320, 66541996, 68688512, 77713280, 83177495, 85860640, 133083992, 137377024, 155426560, 166354990, 171721280, 266167984, 332709980, 343442560, 532335968, 665419960, 686885120, 1064671936, 1330839920, 2129343872, 2661679840, 4258687744, 5323359680, 10646719360, 21293438720]

約数ペア:

[(1, 21293438720), (2, 10646719360), (4, 5323359680), (5, 4258687744), (8, 2661679840), (10, 2129343872), (16, 1330839920), (20, 1064671936), (31, 686885120), (32, 665419960), (40, 532335968), (62, 343442560), (64, 332709980), (80, 266167984), (124, 171721280), (128, 166354990), (137, 155426560), (155, 137377024), (160, 133083992), (248, 85860640), (256, 83177495), (274, 77713280), (310, 68688512), (320, 66541996), (496, 42930320), (548, 38856640), (620, 34344256), (640, 33270998), (685, 31085312), (992, 21465160), (1096, 19428320), (1240, 17172128), (1280, 16635499), (1370, 15542656), (1984, 10732580), (2192, 9714160), (2480, 8586064), (2740, 7771328), (3917, 5436160), (3968, 5366290), (4247, 5013760), (4384, 4857080), (4960, 4293032), (5480, 3885664), (7834, 2718080), (7936, 2683145), (8494, 2506880), (8768, 2428540), (9920, 2146516), (10960, 1942832), (15668, 1359040), (16988, 1253440), (17536, 1214270), (19585, 1087232), (19840, 1073258), (21235, 1002752), (21920, 971416), (31336, 679520), (33976, 626720), (35072, 607135), (39170, 543616), (39680, 536629), (42470, 501376), (43840, 485708), (62672, 339760), (67952, 313360), (78340, 271808), (84940, 250688), (87680, 242854), (121427, 175360), (125344, 169880), (135904, 156680)]