400375780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{53959}}^1$

素因数の和:54028

約数の個数: 48

約数和(自身を含む): 979050240

約数和(自身を除く): 578674460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 3710, 7420, 53959, 107918, 215836, 269795, 377713, 539590, 755426, 1079180, 1510852, 1888565, 2859827, 3777130, 5719654, 7554260, 11439308, 14299135, 20018789, 28598270, 40037578, 57196540, 80075156, 100093945, 200187890, 400375780]

約数ペア:

[(1, 400375780), (2, 200187890), (4, 100093945), (5, 80075156), (7, 57196540), (10, 40037578), (14, 28598270), (20, 20018789), (28, 14299135), (35, 11439308), (53, 7554260), (70, 5719654), (106, 3777130), (140, 2859827), (212, 1888565), (265, 1510852), (371, 1079180), (530, 755426), (742, 539590), (1060, 377713), (1484, 269795), (1855, 215836), (3710, 107918), (7420, 53959)]