1281990640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{37529}}^1$

素因数の和:37610

約数の個数: 80

約数和(自身を含む): 3462367680

約数和(自身を除く): 2180377040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2135, 2440, 3416, 4270, 4880, 6832, 8540, 17080, 34160, 37529, 75058, 150116, 187645, 262703, 300232, 375290, 525406, 600464, 750580, 1050812, 1313515, 1501160, 2101624, 2289269, 2627030, 3002320, 4203248, 4578538, 5254060, 9157076, 10508120, 11446345, 16024883, 18314152, 21016240, 22892690, 32049766, 36628304, 45785380, 64099532, 80124415, 91570760, 128199064, 160248830, 183141520, 256398128, 320497660, 640995320, 1281990640]

約数ペア:

[(1, 1281990640), (2, 640995320), (4, 320497660), (5, 256398128), (7, 183141520), (8, 160248830), (10, 128199064), (14, 91570760), (16, 80124415), (20, 64099532), (28, 45785380), (35, 36628304), (40, 32049766), (56, 22892690), (61, 21016240), (70, 18314152), (80, 16024883), (112, 11446345), (122, 10508120), (140, 9157076), (244, 5254060), (280, 4578538), (305, 4203248), (427, 3002320), (488, 2627030), (560, 2289269), (610, 2101624), (854, 1501160), (976, 1313515), (1220, 1050812), (1708, 750580), (2135, 600464), (2440, 525406), (3416, 375290), (4270, 300232), (4880, 262703), (6832, 187645), (8540, 150116), (17080, 75058), (34160, 37529)]