81329920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:370

約数の個数: 144

約数和(自身を含む): 231053760

約数和(自身を除く): 149723840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 128, 140, 145, 160, 203, 224, 232, 256, 280, 290, 313, 320, 406, 448, 464, 560, 580, 626, 640, 812, 896, 928, 1015, 1120, 1160, 1252, 1280, 1565, 1624, 1792, 1856, 2030, 2191, 2240, 2320, 2504, 3130, 3248, 3712, 4060, 4382, 4480, 4640, 5008, 6260, 6496, 7424, 8120, 8764, 8960, 9077, 9280, 10016, 10955, 12520, 12992, 16240, 17528, 18154, 18560, 20032, 21910, 25040, 25984, 32480, 35056, 36308, 37120, 40064, 43820, 45385, 50080, 51968, 63539, 64960, 70112, 72616, 80128, 87640, 90770, 100160, 127078, 129920, 140224, 145232, 175280, 181540, 200320, 254156, 259840, 280448, 290464, 317695, 350560, 363080, 400640, 508312, 560896, 580928, 635390, 701120, 726160, 1016624, 1161856, 1270780, 1402240, 1452320, 2033248, 2323712, 2541560, 2804480, 2904640, 4066496, 5083120, 5809280, 8132992, 10166240, 11618560, 16265984, 20332480, 40664960, 81329920]

約数ペア:

[(1, 81329920), (2, 40664960), (4, 20332480), (5, 16265984), (7, 11618560), (8, 10166240), (10, 8132992), (14, 5809280), (16, 5083120), (20, 4066496), (28, 2904640), (29, 2804480), (32, 2541560), (35, 2323712), (40, 2033248), (56, 1452320), (58, 1402240), (64, 1270780), (70, 1161856), (80, 1016624), (112, 726160), (116, 701120), (128, 635390), (140, 580928), (145, 560896), (160, 508312), (203, 400640), (224, 363080), (232, 350560), (256, 317695), (280, 290464), (290, 280448), (313, 259840), (320, 254156), (406, 200320), (448, 181540), (464, 175280), (560, 145232), (580, 140224), (626, 129920), (640, 127078), (812, 100160), (896, 90770), (928, 87640), (1015, 80128), (1120, 72616), (1160, 70112), (1252, 64960), (1280, 63539), (1565, 51968), (1624, 50080), (1792, 45385), (1856, 43820), (2030, 40064), (2191, 37120), (2240, 36308), (2320, 35056), (2504, 32480), (3130, 25984), (3248, 25040), (3712, 21910), (4060, 20032), (4382, 18560), (4480, 18154), (4640, 17528), (5008, 16240), (6260, 12992), (6496, 12520), (7424, 10955), (8120, 10016), (8764, 9280), (8960, 9077)]