20138560

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:180

約数の個数: 112

約数和(自身を含む): 53254656

約数和(自身を除く): 33116096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 103, 104, 130, 160, 188, 206, 208, 235, 260, 320, 376, 412, 416, 470, 515, 520, 611, 752, 824, 832, 940, 1030, 1040, 1222, 1339, 1504, 1648, 1880, 2060, 2080, 2444, 2678, 3008, 3055, 3296, 3760, 4120, 4160, 4841, 4888, 5356, 6110, 6592, 6695, 7520, 8240, 9682, 9776, 10712, 12220, 13390, 15040, 16480, 19364, 19552, 21424, 24205, 24440, 26780, 32960, 38728, 39104, 42848, 48410, 48880, 53560, 62933, 77456, 85696, 96820, 97760, 107120, 125866, 154912, 193640, 195520, 214240, 251732, 309824, 314665, 387280, 428480, 503464, 629330, 774560, 1006928, 1258660, 1549120, 2013856, 2517320, 4027712, 5034640, 10069280, 20138560]

約数ペア:

[(1, 20138560), (2, 10069280), (4, 5034640), (5, 4027712), (8, 2517320), (10, 2013856), (13, 1549120), (16, 1258660), (20, 1006928), (26, 774560), (32, 629330), (40, 503464), (47, 428480), (52, 387280), (64, 314665), (65, 309824), (80, 251732), (94, 214240), (103, 195520), (104, 193640), (130, 154912), (160, 125866), (188, 107120), (206, 97760), (208, 96820), (235, 85696), (260, 77456), (320, 62933), (376, 53560), (412, 48880), (416, 48410), (470, 42848), (515, 39104), (520, 38728), (611, 32960), (752, 26780), (824, 24440), (832, 24205), (940, 21424), (1030, 19552), (1040, 19364), (1222, 16480), (1339, 15040), (1504, 13390), (1648, 12220), (1880, 10712), (2060, 9776), (2080, 9682), (2444, 8240), (2678, 7520), (3008, 6695), (3055, 6592), (3296, 6110), (3760, 5356), (4120, 4888), (4160, 4841)]