18797156

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 40118400

約数和(自身を除く): 21321244

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 266, 356, 397, 532, 623, 794, 1246, 1588, 1691, 2492, 2779, 3382, 5558, 6764, 7543, 11116, 11837, 15086, 23674, 30172, 35333, 47348, 52801, 70666, 105602, 141332, 211204, 247331, 494662, 671327, 989324, 1342654, 2685308, 4699289, 9398578, 18797156]

約数ペア:

[(1, 18797156), (2, 9398578), (4, 4699289), (7, 2685308), (14, 1342654), (19, 989324), (28, 671327), (38, 494662), (76, 247331), (89, 211204), (133, 141332), (178, 105602), (266, 70666), (356, 52801), (397, 47348), (532, 35333), (623, 30172), (794, 23674), (1246, 15086), (1588, 11837), (1691, 11116), (2492, 7543), (2779, 6764), (3382, 5558)]