639341520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{85933}}^1$

素因数の和:85980

約数の個数: 80

約数和(自身を含む): 2045916672

約数和(自身を除く): 1406575152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 85933, 171866, 257799, 343732, 429665, 515598, 687464, 859330, 1031196, 1288995, 1374928, 1718660, 2062392, 2577990, 2663923, 3437320, 4124784, 5155980, 5327846, 6874640, 7991769, 10311960, 10655692, 13319615, 15983538, 20623920, 21311384, 26639230, 31967076, 39958845, 42622768, 53278460, 63934152, 79917690, 106556920, 127868304, 159835380, 213113840, 319670760, 639341520]

約数ペア:

[(1, 639341520), (2, 319670760), (3, 213113840), (4, 159835380), (5, 127868304), (6, 106556920), (8, 79917690), (10, 63934152), (12, 53278460), (15, 42622768), (16, 39958845), (20, 31967076), (24, 26639230), (30, 21311384), (31, 20623920), (40, 15983538), (48, 13319615), (60, 10655692), (62, 10311960), (80, 7991769), (93, 6874640), (120, 5327846), (124, 5155980), (155, 4124784), (186, 3437320), (240, 2663923), (248, 2577990), (310, 2062392), (372, 1718660), (465, 1374928), (496, 1288995), (620, 1031196), (744, 859330), (930, 687464), (1240, 515598), (1488, 429665), (1860, 343732), (2480, 257799), (3720, 171866), (7440, 85933)]