79681840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20327}}^1$

素因数の和:20354

約数の個数: 60

約数和(自身を含む): 215517456

約数和(自身を除く): 135835616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20327, 40654, 81308, 101635, 142289, 162616, 203270, 284578, 325232, 406540, 569156, 711445, 813080, 996023, 1138312, 1422890, 1626160, 1992046, 2276624, 2845780, 3984092, 4980115, 5691560, 7968184, 9960230, 11383120, 15936368, 19920460, 39840920, 79681840]

約数ペア:

[(1, 79681840), (2, 39840920), (4, 19920460), (5, 15936368), (7, 11383120), (8, 9960230), (10, 7968184), (14, 5691560), (16, 4980115), (20, 3984092), (28, 2845780), (35, 2276624), (40, 1992046), (49, 1626160), (56, 1422890), (70, 1138312), (80, 996023), (98, 813080), (112, 711445), (140, 569156), (196, 406540), (245, 325232), (280, 284578), (392, 203270), (490, 162616), (560, 142289), (784, 101635), (980, 81308), (1960, 40654), (3920, 20327)]