21325542400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{131}}^1\times {\mathrm{6359}}^1$

素因数の和:6520

約数の個数: 132

約数和(自身を含む): 53273420640

約数和(自身を除く): 31947878240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 131, 160, 200, 256, 262, 320, 400, 512, 524, 640, 655, 800, 1024, 1048, 1280, 1310, 1600, 2096, 2560, 2620, 3200, 3275, 4192, 5120, 5240, 6359, 6400, 6550, 8384, 10480, 12718, 12800, 13100, 16768, 20960, 25436, 25600, 26200, 31795, 33536, 41920, 50872, 52400, 63590, 67072, 83840, 101744, 104800, 127180, 134144, 158975, 167680, 203488, 209600, 254360, 317950, 335360, 406976, 419200, 508720, 635900, 670720, 813952, 833029, 838400, 1017440, 1271800, 1627904, 1666058, 1676800, 2034880, 2543600, 3255808, 3332116, 3353600, 4069760, 4165145, 5087200, 6511616, 6664232, 8139520, 8330290, 10174400, 13328464, 16279040, 16660580, 20348800, 20825725, 26656928, 32558080, 33321160, 40697600, 41651450, 53313856, 66642320, 81395200, 83302900, 106627712, 133284640, 162790400, 166605800, 213255424, 266569280, 333211600, 426510848, 533138560, 666423200, 853021696, 1066277120, 1332846400, 2132554240, 2665692800, 4265108480, 5331385600, 10662771200, 21325542400]

約数ペア:

[(1, 21325542400), (2, 10662771200), (4, 5331385600), (5, 4265108480), (8, 2665692800), (10, 2132554240), (16, 1332846400), (20, 1066277120), (25, 853021696), (32, 666423200), (40, 533138560), (50, 426510848), (64, 333211600), (80, 266569280), (100, 213255424), (128, 166605800), (131, 162790400), (160, 133284640), (200, 106627712), (256, 83302900), (262, 81395200), (320, 66642320), (400, 53313856), (512, 41651450), (524, 40697600), (640, 33321160), (655, 32558080), (800, 26656928), (1024, 20825725), (1048, 20348800), (1280, 16660580), (1310, 16279040), (1600, 13328464), (2096, 10174400), (2560, 8330290), (2620, 8139520), (3200, 6664232), (3275, 6511616), (4192, 5087200), (5120, 4165145), (5240, 4069760), (6359, 3353600), (6400, 3332116), (6550, 3255808), (8384, 2543600), (10480, 2034880), (12718, 1676800), (12800, 1666058), (13100, 1627904), (16768, 1271800), (20960, 1017440), (25436, 838400), (25600, 833029), (26200, 813952), (31795, 670720), (33536, 635900), (41920, 508720), (50872, 419200), (52400, 406976), (63590, 335360), (67072, 317950), (83840, 254360), (101744, 209600), (104800, 203488), (127180, 167680), (134144, 158975)]