19981856920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26291917}}^1$

素因数の和:26291947

約数の個数: 32

約数和(自身を含む): 47325452400

約数和(自身を除く): 27343595480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26291917, 52583834, 105167668, 131459585, 210335336, 262919170, 499546423, 525838340, 999092846, 1051676680, 1998185692, 2497732115, 3996371384, 4995464230, 9990928460, 19981856920]

約数ペア:

[(1, 19981856920), (2, 9990928460), (4, 4995464230), (5, 3996371384), (8, 2497732115), (10, 1998185692), (19, 1051676680), (20, 999092846), (38, 525838340), (40, 499546423), (76, 262919170), (95, 210335336), (152, 131459585), (190, 105167668), (380, 52583834), (760, 26291917)]