161320640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:219

約数の個数: 168

約数和(自身を含む): 440649360

約数和(自身を除く): 279328720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 130, 152, 157, 160, 169, 190, 208, 247, 260, 304, 314, 320, 338, 380, 416, 494, 520, 608, 628, 676, 760, 785, 832, 845, 988, 1040, 1216, 1235, 1256, 1352, 1520, 1570, 1690, 1976, 2041, 2080, 2470, 2512, 2704, 2983, 3040, 3140, 3211, 3380, 3952, 4082, 4160, 4940, 5024, 5408, 5966, 6080, 6280, 6422, 6760, 7904, 8164, 9880, 10048, 10205, 10816, 11932, 12560, 12844, 13520, 14915, 15808, 16055, 16328, 19760, 20410, 23864, 25120, 25688, 26533, 27040, 29830, 32110, 32656, 38779, 39520, 40820, 47728, 50240, 51376, 53066, 54080, 59660, 64220, 65312, 77558, 79040, 81640, 95456, 102752, 106132, 119320, 128440, 130624, 132665, 155116, 163280, 190912, 193895, 205504, 212264, 238640, 256880, 265330, 310232, 326560, 387790, 424528, 477280, 504127, 513760, 530660, 620464, 653120, 775580, 849056, 954560, 1008254, 1027520, 1061320, 1240928, 1551160, 1698112, 2016508, 2122640, 2481856, 2520635, 3102320, 4033016, 4245280, 5041270, 6204640, 8066032, 8490560, 10082540, 12409280, 16132064, 20165080, 32264128, 40330160, 80660320, 161320640]

約数ペア:

[(1, 161320640), (2, 80660320), (4, 40330160), (5, 32264128), (8, 20165080), (10, 16132064), (13, 12409280), (16, 10082540), (19, 8490560), (20, 8066032), (26, 6204640), (32, 5041270), (38, 4245280), (40, 4033016), (52, 3102320), (64, 2520635), (65, 2481856), (76, 2122640), (80, 2016508), (95, 1698112), (104, 1551160), (130, 1240928), (152, 1061320), (157, 1027520), (160, 1008254), (169, 954560), (190, 849056), (208, 775580), (247, 653120), (260, 620464), (304, 530660), (314, 513760), (320, 504127), (338, 477280), (380, 424528), (416, 387790), (494, 326560), (520, 310232), (608, 265330), (628, 256880), (676, 238640), (760, 212264), (785, 205504), (832, 193895), (845, 190912), (988, 163280), (1040, 155116), (1216, 132665), (1235, 130624), (1256, 128440), (1352, 119320), (1520, 106132), (1570, 102752), (1690, 95456), (1976, 81640), (2041, 79040), (2080, 77558), (2470, 65312), (2512, 64220), (2704, 59660), (2983, 54080), (3040, 53066), (3140, 51376), (3211, 50240), (3380, 47728), (3952, 40820), (4082, 39520), (4160, 38779), (4940, 32656), (5024, 32110), (5408, 29830), (5966, 27040), (6080, 26533), (6280, 25688), (6422, 25120), (6760, 23864), (7904, 20410), (8164, 19760), (9880, 16328), (10048, 16055), (10205, 15808), (10816, 14915), (11932, 13520), (12560, 12844)]