13905220

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2027}}^1$

素因数の和:2057

約数の個数: 48

約数和(自身を含む): 34070400

約数和(自身を除く): 20165180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2027, 3430, 4054, 6860, 8108, 10135, 14189, 20270, 28378, 40540, 56756, 70945, 99323, 141890, 198646, 283780, 397292, 496615, 695261, 993230, 1390522, 1986460, 2781044, 3476305, 6952610, 13905220]

約数ペア:

[(1, 13905220), (2, 6952610), (4, 3476305), (5, 2781044), (7, 1986460), (10, 1390522), (14, 993230), (20, 695261), (28, 496615), (35, 397292), (49, 283780), (70, 198646), (98, 141890), (140, 99323), (196, 70945), (245, 56756), (343, 40540), (490, 28378), (686, 20270), (980, 14189), (1372, 10135), (1715, 8108), (2027, 6860), (3430, 4054)]