400466560

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1$

素因数の和:538

約数の個数: 128

約数和(自身を含む): 1041868800

約数和(自身を除く): 641402240

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, 379, 416, 508, 520, 635, 640, 758, 832, 1016, 1040, 1270, 1516, 1651, 1664, 1895, 2032, 2080, 2540, 3032, 3302, 3790, 4064, 4160, 4927, 5080, 6064, 6604, 7580, 8128, 8255, 8320, 9854, 10160, 12128, 13208, 15160, 16256, 16510, 19708, 20320, 24256, 24635, 26416, 30320, 33020, 39416, 40640, 48133, 48512, 49270, 52832, 60640, 66040, 78832, 81280, 96266, 98540, 105664, 121280, 132080, 157664, 192532, 197080, 211328, 240665, 242560, 264160, 315328, 385064, 394160, 481330, 528320, 625729, 630656, 770128, 788320, 962660, 1056640, 1251458, 1540256, 1576640, 1925320, 2502916, 3080512, 3128645, 3153280, 3850640, 5005832, 6161024, 6257290, 7701280, 10011664, 12514580, 15402560, 20023328, 25029160, 30805120, 40046656, 50058320, 80093312, 100116640, 200233280, 400466560]

約数ペア:

[(1, 400466560), (2, 200233280), (4, 100116640), (5, 80093312), (8, 50058320), (10, 40046656), (13, 30805120), (16, 25029160), (20, 20023328), (26, 15402560), (32, 12514580), (40, 10011664), (52, 7701280), (64, 6257290), (65, 6161024), (80, 5005832), (104, 3850640), (127, 3153280), (128, 3128645), (130, 3080512), (160, 2502916), (208, 1925320), (254, 1576640), (260, 1540256), (320, 1251458), (379, 1056640), (416, 962660), (508, 788320), (520, 770128), (635, 630656), (640, 625729), (758, 528320), (832, 481330), (1016, 394160), (1040, 385064), (1270, 315328), (1516, 264160), (1651, 242560), (1664, 240665), (1895, 211328), (2032, 197080), (2080, 192532), (2540, 157664), (3032, 132080), (3302, 121280), (3790, 105664), (4064, 98540), (4160, 96266), (4927, 81280), (5080, 78832), (6064, 66040), (6604, 60640), (7580, 52832), (8128, 49270), (8255, 48512), (8320, 48133), (9854, 40640), (10160, 39416), (12128, 33020), (13208, 30320), (15160, 26416), (16256, 24635), (16510, 24256), (19708, 20320)]