21695989120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{20533}}^1$

素因数の和:20692

約数の個数: 128

約数和(自身を含む): 56299299840

約数和(自身を除く): 34603310720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 127, 128, 130, 160, 208, 254, 260, 320, 416, 508, 520, 635, 640, 832, 1016, 1040, 1270, 1651, 1664, 2032, 2080, 2540, 3302, 4064, 4160, 5080, 6604, 8128, 8255, 8320, 10160, 13208, 16256, 16510, 20320, 20533, 26416, 33020, 40640, 41066, 52832, 66040, 81280, 82132, 102665, 105664, 132080, 164264, 205330, 211328, 264160, 266929, 328528, 410660, 528320, 533858, 657056, 821320, 1056640, 1067716, 1314112, 1334645, 1642640, 2135432, 2607691, 2628224, 2669290, 3285280, 4270864, 5215382, 5338580, 6570560, 8541728, 10430764, 10677160, 13038455, 13141120, 17083456, 20861528, 21354320, 26076910, 33899983, 34166912, 41723056, 42708640, 52153820, 67799966, 83446112, 85417280, 104307640, 135599932, 166892224, 169499915, 170834560, 208615280, 271199864, 333784448, 338999830, 417230560, 542399728, 677999660, 834461120, 1084799456, 1355999320, 1668922240, 2169598912, 2711998640, 4339197824, 5423997280, 10847994560, 21695989120]

約数ペア:

[(1, 21695989120), (2, 10847994560), (4, 5423997280), (5, 4339197824), (8, 2711998640), (10, 2169598912), (13, 1668922240), (16, 1355999320), (20, 1084799456), (26, 834461120), (32, 677999660), (40, 542399728), (52, 417230560), (64, 338999830), (65, 333784448), (80, 271199864), (104, 208615280), (127, 170834560), (128, 169499915), (130, 166892224), (160, 135599932), (208, 104307640), (254, 85417280), (260, 83446112), (320, 67799966), (416, 52153820), (508, 42708640), (520, 41723056), (635, 34166912), (640, 33899983), (832, 26076910), (1016, 21354320), (1040, 20861528), (1270, 17083456), (1651, 13141120), (1664, 13038455), (2032, 10677160), (2080, 10430764), (2540, 8541728), (3302, 6570560), (4064, 5338580), (4160, 5215382), (5080, 4270864), (6604, 3285280), (8128, 2669290), (8255, 2628224), (8320, 2607691), (10160, 2135432), (13208, 1642640), (16256, 1334645), (16510, 1314112), (20320, 1067716), (20533, 1056640), (26416, 821320), (33020, 657056), (40640, 533858), (41066, 528320), (52832, 410660), (66040, 328528), (81280, 266929), (82132, 264160), (102665, 211328), (105664, 205330), (132080, 164264)]