80660320

素因数分解:

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

素因数の和:217

約数の個数: 144

約数和(自身を含む): 218589840

約数和(自身を除く): 137929520

約数列:

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

約数ペア:

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