218597980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{2131}}^1$

素因数の和:2386

約数の個数: 48

約数和(自身を含む): 481388544

約数和(自身を除く): 262790564

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 223, 230, 446, 460, 892, 1115, 2131, 2230, 4262, 4460, 5129, 8524, 10258, 10655, 20516, 21310, 25645, 42620, 49013, 51290, 98026, 102580, 196052, 245065, 475213, 490130, 950426, 980260, 1900852, 2376065, 4752130, 9504260, 10929899, 21859798, 43719596, 54649495, 109298990, 218597980]

約数ペア:

[(1, 218597980), (2, 109298990), (4, 54649495), (5, 43719596), (10, 21859798), (20, 10929899), (23, 9504260), (46, 4752130), (92, 2376065), (115, 1900852), (223, 980260), (230, 950426), (446, 490130), (460, 475213), (892, 245065), (1115, 196052), (2131, 102580), (2230, 98026), (4262, 51290), (4460, 49013), (5129, 42620), (8524, 25645), (10258, 21310), (10655, 20516)]