80496940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1103}}^1$

素因数の和:1242

約数の個数: 48

約数和(自身を含む): 175271040

約数和(自身を除く): 94774100

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 410, 445, 820, 890, 1103, 1780, 2206, 3649, 4412, 5515, 7298, 11030, 14596, 18245, 22060, 36490, 45223, 72980, 90446, 98167, 180892, 196334, 226115, 392668, 452230, 490835, 904460, 981670, 1963340, 4024847, 8049694, 16099388, 20124235, 40248470, 80496940]

約数ペア:

[(1, 80496940), (2, 40248470), (4, 20124235), (5, 16099388), (10, 8049694), (20, 4024847), (41, 1963340), (82, 981670), (89, 904460), (164, 490835), (178, 452230), (205, 392668), (356, 226115), (410, 196334), (445, 180892), (820, 98167), (890, 90446), (1103, 72980), (1780, 45223), (2206, 36490), (3649, 22060), (4412, 18245), (5515, 14596), (7298, 11030)]