20914000640

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1021}}^1\times {\mathrm{1231}}^1$

素因数の和:2286

約数の個数: 144

約数和(自身を含む): 54045780096

約数和(自身を除く): 33131779456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1021, 1040, 1231, 1280, 1664, 2042, 2080, 2462, 3328, 4084, 4160, 4924, 5105, 6155, 8168, 8320, 9848, 10210, 12310, 13273, 16003, 16336, 16640, 19696, 20420, 24620, 26546, 32006, 32672, 39392, 40840, 49240, 53092, 64012, 65344, 66365, 78784, 80015, 81680, 98480, 106184, 128024, 130688, 132730, 157568, 160030, 163360, 196960, 212368, 256048, 261376, 265460, 315136, 320060, 326720, 393920, 424736, 512096, 530920, 640120, 653440, 787840, 849472, 1024192, 1061840, 1256851, 1280240, 1306880, 1575680, 1698944, 2048384, 2123680, 2513702, 2560480, 3397888, 4096768, 4247360, 5027404, 5120960, 6284255, 8494720, 10054808, 10241920, 12568510, 16339063, 16989440, 20109616, 20483840, 25137020, 32678126, 40219232, 50274040, 65356252, 80438464, 81695315, 100548080, 130712504, 160876928, 163390630, 201096160, 261425008, 321753856, 326781260, 402192320, 522850016, 653562520, 804384640, 1045700032, 1307125040, 1608769280, 2091400064, 2614250080, 4182800128, 5228500160, 10457000320, 20914000640]

約数ペア:

[(1, 20914000640), (2, 10457000320), (4, 5228500160), (5, 4182800128), (8, 2614250080), (10, 2091400064), (13, 1608769280), (16, 1307125040), (20, 1045700032), (26, 804384640), (32, 653562520), (40, 522850016), (52, 402192320), (64, 326781260), (65, 321753856), (80, 261425008), (104, 201096160), (128, 163390630), (130, 160876928), (160, 130712504), (208, 100548080), (256, 81695315), (260, 80438464), (320, 65356252), (416, 50274040), (520, 40219232), (640, 32678126), (832, 25137020), (1021, 20483840), (1040, 20109616), (1231, 16989440), (1280, 16339063), (1664, 12568510), (2042, 10241920), (2080, 10054808), (2462, 8494720), (3328, 6284255), (4084, 5120960), (4160, 5027404), (4924, 4247360), (5105, 4096768), (6155, 3397888), (8168, 2560480), (8320, 2513702), (9848, 2123680), (10210, 2048384), (12310, 1698944), (13273, 1575680), (16003, 1306880), (16336, 1280240), (16640, 1256851), (19696, 1061840), (20420, 1024192), (24620, 849472), (26546, 787840), (32006, 653440), (32672, 640120), (39392, 530920), (40840, 512096), (49240, 424736), (53092, 393920), (64012, 326720), (65344, 320060), (66365, 315136), (78784, 265460), (80015, 261376), (81680, 256048), (98480, 212368), (106184, 196960), (128024, 163360), (130688, 160030), (132730, 157568)]