81707080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22447}}^1$

素因数の和:22478

約数の個数: 64

約数和(自身を含む): 226275840

約数和(自身を除く): 144568760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 22447, 44894, 89788, 112235, 157129, 179576, 224470, 291811, 314258, 448940, 583622, 628516, 785645, 897880, 1167244, 1257032, 1459055, 1571290, 2042677, 2334488, 2918110, 3142580, 4085354, 5836220, 6285160, 8170708, 10213385, 11672440, 16341416, 20426770, 40853540, 81707080]

約数ペア:

[(1, 81707080), (2, 40853540), (4, 20426770), (5, 16341416), (7, 11672440), (8, 10213385), (10, 8170708), (13, 6285160), (14, 5836220), (20, 4085354), (26, 3142580), (28, 2918110), (35, 2334488), (40, 2042677), (52, 1571290), (56, 1459055), (65, 1257032), (70, 1167244), (91, 897880), (104, 785645), (130, 628516), (140, 583622), (182, 448940), (260, 314258), (280, 291811), (364, 224470), (455, 179576), (520, 157129), (728, 112235), (910, 89788), (1820, 44894), (3640, 22447)]