20161502080

素因数分解:

$2^7\times 5^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1\times {\mathrm{1087}}^1$

素因数の和:1576

約数の個数: 128

約数和(自身を含む): 49026977280

約数和(自身を除く): 28865475200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 292, 320, 365, 397, 584, 640, 730, 794, 1087, 1168, 1460, 1588, 1985, 2174, 2336, 2920, 3176, 3970, 4348, 4672, 5435, 5840, 6352, 7940, 8696, 9344, 10870, 11680, 12704, 15880, 17392, 21740, 23360, 25408, 28981, 31760, 34784, 43480, 46720, 50816, 57962, 63520, 69568, 79351, 86960, 115924, 127040, 139136, 144905, 158702, 173920, 231848, 254080, 289810, 317404, 347840, 396755, 431539, 463696, 579620, 634808, 695680, 793510, 863078, 927392, 1159240, 1269616, 1587020, 1726156, 1854784, 2157695, 2318480, 2539232, 3174040, 3452312, 3709568, 4315390, 4636960, 5078464, 6348080, 6904624, 8630780, 9273920, 10156928, 12696160, 13809248, 17261560, 18547840, 25392320, 27618496, 31502347, 34523120, 50784640, 55236992, 63004694, 69046240, 126009388, 138092480, 157511735, 252018776, 276184960, 315023470, 504037552, 630046940, 1008075104, 1260093880, 2016150208, 2520187760, 4032300416, 5040375520, 10080751040, 20161502080]

約数ペア:

[(1, 20161502080), (2, 10080751040), (4, 5040375520), (5, 4032300416), (8, 2520187760), (10, 2016150208), (16, 1260093880), (20, 1008075104), (32, 630046940), (40, 504037552), (64, 315023470), (73, 276184960), (80, 252018776), (128, 157511735), (146, 138092480), (160, 126009388), (292, 69046240), (320, 63004694), (365, 55236992), (397, 50784640), (584, 34523120), (640, 31502347), (730, 27618496), (794, 25392320), (1087, 18547840), (1168, 17261560), (1460, 13809248), (1588, 12696160), (1985, 10156928), (2174, 9273920), (2336, 8630780), (2920, 6904624), (3176, 6348080), (3970, 5078464), (4348, 4636960), (4672, 4315390), (5435, 3709568), (5840, 3452312), (6352, 3174040), (7940, 2539232), (8696, 2318480), (9344, 2157695), (10870, 1854784), (11680, 1726156), (12704, 1587020), (15880, 1269616), (17392, 1159240), (21740, 927392), (23360, 863078), (25408, 793510), (28981, 695680), (31760, 634808), (34784, 579620), (43480, 463696), (46720, 431539), (50816, 396755), (57962, 347840), (63520, 317404), (69568, 289810), (79351, 254080), (86960, 231848), (115924, 173920), (127040, 158702), (139136, 144905)]