21415990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{93113}}^1$

素因数の和:93143

約数の個数: 16

約数和(自身を含む): 40225248

約数和(自身を除く): 18809258

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 93113, 186226, 465565, 931130, 2141599, 4283198, 10707995, 21415990]

約数ペア:

[(1, 21415990), (2, 10707995), (5, 4283198), (10, 2141599), (23, 931130), (46, 465565), (115, 186226), (230, 93113)]