21304220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21739}}^1$

素因数の和:21762

約数の個数: 36

約数和(自身を含む): 52045560

約数和(自身を除く): 30741340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21739, 43478, 86956, 108695, 152173, 217390, 304346, 434780, 608692, 760865, 1065211, 1521730, 2130422, 3043460, 4260844, 5326055, 10652110, 21304220]

約数ペア:

[(1, 21304220), (2, 10652110), (4, 5326055), (5, 4260844), (7, 3043460), (10, 2130422), (14, 1521730), (20, 1065211), (28, 760865), (35, 608692), (49, 434780), (70, 304346), (98, 217390), (140, 152173), (196, 108695), (245, 86956), (490, 43478), (980, 21739)]