80820220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7229}}^1$

素因数の和:7294

約数の個数: 48

約数和(自身を含む): 187054560

約数和(自身を除く): 106234340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 7229, 11180, 14458, 28916, 36145, 72290, 93977, 144580, 187954, 310847, 375908, 469885, 621694, 939770, 1243388, 1554235, 1879540, 3108470, 4041011, 6216940, 8082022, 16164044, 20205055, 40410110, 80820220]

約数ペア:

[(1, 80820220), (2, 40410110), (4, 20205055), (5, 16164044), (10, 8082022), (13, 6216940), (20, 4041011), (26, 3108470), (43, 1879540), (52, 1554235), (65, 1243388), (86, 939770), (130, 621694), (172, 469885), (215, 375908), (260, 310847), (430, 187954), (559, 144580), (860, 93977), (1118, 72290), (2236, 36145), (2795, 28916), (5590, 14458), (7229, 11180)]