191991010

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{4789}}^1$

素因数の和:5026

約数の個数: 32

約数和(自身を含む): 365572800

約数和(自身を除く): 173581790

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 211, 422, 1055, 2110, 4009, 4789, 8018, 9578, 20045, 23945, 40090, 47890, 90991, 181982, 454955, 909910, 1010479, 2020958, 5052395, 10104790, 19199101, 38398202, 95995505, 191991010]

約数ペア:

[(1, 191991010), (2, 95995505), (5, 38398202), (10, 19199101), (19, 10104790), (38, 5052395), (95, 2020958), (190, 1010479), (211, 909910), (422, 454955), (1055, 181982), (2110, 90991), (4009, 47890), (4789, 40090), (8018, 23945), (9578, 20045)]