2560220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 5950560

約数和(自身を除く): 3390340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 229, 260, 430, 458, 559, 860, 916, 1118, 1145, 2236, 2290, 2795, 2977, 4580, 5590, 5954, 9847, 11180, 11908, 14885, 19694, 29770, 39388, 49235, 59540, 98470, 128011, 196940, 256022, 512044, 640055, 1280110, 2560220]

約数ペア:

[(1, 2560220), (2, 1280110), (4, 640055), (5, 512044), (10, 256022), (13, 196940), (20, 128011), (26, 98470), (43, 59540), (52, 49235), (65, 39388), (86, 29770), (130, 19694), (172, 14885), (215, 11908), (229, 11180), (260, 9847), (430, 5954), (458, 5590), (559, 4580), (860, 2977), (916, 2795), (1118, 2290), (1145, 2236)]