83405840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{21277}}^1$

素因数の和:21304

約数の個数: 60

約数和(自身を含む): 225589356

約数和(自身を除く): 142183516

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, 21277, 42554, 85108, 106385, 148939, 170216, 212770, 297878, 340432, 425540, 595756, 744695, 851080, 1042573, 1191512, 1489390, 1702160, 2085146, 2383024, 2978780, 4170292, 5212865, 5957560, 8340584, 10425730, 11915120, 16681168, 20851460, 41702920, 83405840]

約数ペア:

[(1, 83405840), (2, 41702920), (4, 20851460), (5, 16681168), (7, 11915120), (8, 10425730), (10, 8340584), (14, 5957560), (16, 5212865), (20, 4170292), (28, 2978780), (35, 2383024), (40, 2085146), (49, 1702160), (56, 1489390), (70, 1191512), (80, 1042573), (98, 851080), (112, 744695), (140, 595756), (196, 425540), (245, 340432), (280, 297878), (392, 212770), (490, 170216), (560, 148939), (784, 106385), (980, 85108), (1960, 42554), (3920, 21277)]