161777420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{165079}}^1$

素因数の和:165102

約数の個数: 36

約数和(自身を含む): 395201520

約数和(自身を除く): 233424100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 165079, 330158, 660316, 825395, 1155553, 1650790, 2311106, 3301580, 4622212, 5777765, 8088871, 11555530, 16177742, 23111060, 32355484, 40444355, 80888710, 161777420]

約数ペア:

[(1, 161777420), (2, 80888710), (4, 40444355), (5, 32355484), (7, 23111060), (10, 16177742), (14, 11555530), (20, 8088871), (28, 5777765), (35, 4622212), (49, 3301580), (70, 2311106), (98, 1650790), (140, 1155553), (196, 825395), (245, 660316), (490, 330158), (980, 165079)]