20914720

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1951}}^1$

素因数の和:2033

約数の個数: 48

約数和(自身を含む): 50174208

約数和(自身を除く): 29259488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1951, 2144, 2680, 3902, 5360, 7804, 9755, 10720, 15608, 19510, 31216, 39020, 62432, 78040, 130717, 156080, 261434, 312160, 522868, 653585, 1045736, 1307170, 2091472, 2614340, 4182944, 5228680, 10457360, 20914720]

約数ペア:

[(1, 20914720), (2, 10457360), (4, 5228680), (5, 4182944), (8, 2614340), (10, 2091472), (16, 1307170), (20, 1045736), (32, 653585), (40, 522868), (67, 312160), (80, 261434), (134, 156080), (160, 130717), (268, 78040), (335, 62432), (536, 39020), (670, 31216), (1072, 19510), (1340, 15608), (1951, 10720), (2144, 9755), (2680, 7804), (3902, 5360)]