78401720

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{3623}}^1$

素因数の和:4175

約数の個数: 32

約数和(自身を含む): 176778720

約数和(自身を除く): 98377000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 1082, 2164, 2705, 3623, 4328, 5410, 7246, 10820, 14492, 18115, 21640, 28984, 36230, 72460, 144920, 1960043, 3920086, 7840172, 9800215, 15680344, 19600430, 39200860, 78401720]

約数ペア:

[(1, 78401720), (2, 39200860), (4, 19600430), (5, 15680344), (8, 9800215), (10, 7840172), (20, 3920086), (40, 1960043), (541, 144920), (1082, 72460), (2164, 36230), (2705, 28984), (3623, 21640), (4328, 18115), (5410, 14492), (7246, 10820)]