20493970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{811}}^1$

素因数の和:863

約数の個数: 48

約数和(自身を含む): 44549568

約数和(自身を除く): 24055598

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 361, 665, 722, 811, 1330, 1622, 1805, 2527, 3610, 4055, 5054, 5677, 8110, 11354, 12635, 15409, 25270, 28385, 30818, 56770, 77045, 107863, 154090, 215726, 292771, 539315, 585542, 1078630, 1463855, 2049397, 2927710, 4098794, 10246985, 20493970]

約数ペア:

[(1, 20493970), (2, 10246985), (5, 4098794), (7, 2927710), (10, 2049397), (14, 1463855), (19, 1078630), (35, 585542), (38, 539315), (70, 292771), (95, 215726), (133, 154090), (190, 107863), (266, 77045), (361, 56770), (665, 30818), (722, 28385), (811, 25270), (1330, 15409), (1622, 12635), (1805, 11354), (2527, 8110), (3610, 5677), (4055, 5054)]