20659660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{853}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 49928256

約数和(自身を除く): 29268596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 853, 865, 1211, 1706, 1730, 2422, 3412, 3460, 4265, 4844, 5971, 6055, 8530, 11942, 12110, 17060, 23884, 24220, 29855, 59710, 119420, 147569, 295138, 590276, 737845, 1032983, 1475690, 2065966, 2951380, 4131932, 5164915, 10329830, 20659660]

約数ペア:

[(1, 20659660), (2, 10329830), (4, 5164915), (5, 4131932), (7, 2951380), (10, 2065966), (14, 1475690), (20, 1032983), (28, 737845), (35, 590276), (70, 295138), (140, 147569), (173, 119420), (346, 59710), (692, 29855), (853, 24220), (865, 23884), (1211, 17060), (1706, 12110), (1730, 11942), (2422, 8530), (3412, 6055), (3460, 5971), (4265, 4844)]