21642064

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71191}}^1$

素因数の和:71218

約数の個数: 20

約数和(自身を含む): 44139040

約数和(自身を除く): 22496976

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71191, 142382, 284764, 569528, 1139056, 1352629, 2705258, 5410516, 10821032, 21642064]

約数ペア:

[(1, 21642064), (2, 10821032), (4, 5410516), (8, 2705258), (16, 1352629), (19, 1139056), (38, 569528), (76, 284764), (152, 142382), (304, 71191)]