80783920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{797}}^1$

素因数の和:998

約数の個数: 80

約数和(自身を含む): 216111168

約数和(自身を除く): 135327248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 181, 280, 362, 560, 724, 797, 905, 1267, 1448, 1594, 1810, 2534, 2896, 3188, 3620, 3985, 5068, 5579, 6335, 6376, 7240, 7970, 10136, 11158, 12670, 12752, 14480, 15940, 20272, 22316, 25340, 27895, 31880, 44632, 50680, 55790, 63760, 89264, 101360, 111580, 144257, 223160, 288514, 446320, 577028, 721285, 1009799, 1154056, 1442570, 2019598, 2308112, 2885140, 4039196, 5048995, 5770280, 8078392, 10097990, 11540560, 16156784, 20195980, 40391960, 80783920]

約数ペア:

[(1, 80783920), (2, 40391960), (4, 20195980), (5, 16156784), (7, 11540560), (8, 10097990), (10, 8078392), (14, 5770280), (16, 5048995), (20, 4039196), (28, 2885140), (35, 2308112), (40, 2019598), (56, 1442570), (70, 1154056), (80, 1009799), (112, 721285), (140, 577028), (181, 446320), (280, 288514), (362, 223160), (560, 144257), (724, 111580), (797, 101360), (905, 89264), (1267, 63760), (1448, 55790), (1594, 50680), (1810, 44632), (2534, 31880), (2896, 27895), (3188, 25340), (3620, 22316), (3985, 20272), (5068, 15940), (5579, 14480), (6335, 12752), (6376, 12670), (7240, 11158), (7970, 10136)]