18669812

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 39072768

約数和(自身を除く): 20402956

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 137, 157, 217, 274, 314, 434, 548, 628, 868, 959, 1099, 1918, 2198, 3836, 4247, 4396, 4867, 8494, 9734, 16988, 19468, 21509, 29729, 34069, 43018, 59458, 68138, 86036, 118916, 136276, 150563, 301126, 602252, 666779, 1333558, 2667116, 4667453, 9334906, 18669812]

約数ペア:

[(1, 18669812), (2, 9334906), (4, 4667453), (7, 2667116), (14, 1333558), (28, 666779), (31, 602252), (62, 301126), (124, 150563), (137, 136276), (157, 118916), (217, 86036), (274, 68138), (314, 59458), (434, 43018), (548, 34069), (628, 29729), (868, 21509), (959, 19468), (1099, 16988), (1918, 9734), (2198, 8494), (3836, 4867), (4247, 4396)]