21675890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1291}}^1$

素因数の和:1394

約数の個数: 32

約数和(自身を含む): 41302656

約数和(自身を除く): 19626766

約数列:

[1, 2, 5, 10, 23, 46, 73, 115, 146, 230, 365, 730, 1291, 1679, 2582, 3358, 6455, 8395, 12910, 16790, 29693, 59386, 94243, 148465, 188486, 296930, 471215, 942430, 2167589, 4335178, 10837945, 21675890]

約数ペア:

[(1, 21675890), (2, 10837945), (5, 4335178), (10, 2167589), (23, 942430), (46, 471215), (73, 296930), (115, 188486), (146, 148465), (230, 94243), (365, 59386), (730, 29693), (1291, 16790), (1679, 12910), (2582, 8395), (3358, 6455)]