81309760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{36299}}^1$

素因数の和:36323

約数の個数: 56

約数和(自身を含む): 221284800

約数和(自身を除く): 139975040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 36299, 72598, 145196, 181495, 254093, 290392, 362990, 508186, 580784, 725980, 1016372, 1161568, 1270465, 1451960, 2032744, 2323136, 2540930, 2903920, 4065488, 5081860, 5807840, 8130976, 10163720, 11615680, 16261952, 20327440, 40654880, 81309760]

約数ペア:

[(1, 81309760), (2, 40654880), (4, 20327440), (5, 16261952), (7, 11615680), (8, 10163720), (10, 8130976), (14, 5807840), (16, 5081860), (20, 4065488), (28, 2903920), (32, 2540930), (35, 2323136), (40, 2032744), (56, 1451960), (64, 1270465), (70, 1161568), (80, 1016372), (112, 725980), (140, 580784), (160, 508186), (224, 362990), (280, 290392), (320, 254093), (448, 181495), (560, 145196), (1120, 72598), (2240, 36299)]