20642412

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{619}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 55274240

約数和(自身を除く): 34631828

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 397, 619, 794, 1191, 1238, 1588, 1857, 2382, 2476, 2779, 3714, 4333, 4764, 5558, 7428, 8337, 8666, 11116, 12999, 16674, 17332, 25998, 33348, 51996, 245743, 491486, 737229, 982972, 1474458, 1720201, 2948916, 3440402, 5160603, 6880804, 10321206, 20642412]

約数ペア:

[(1, 20642412), (2, 10321206), (3, 6880804), (4, 5160603), (6, 3440402), (7, 2948916), (12, 1720201), (14, 1474458), (21, 982972), (28, 737229), (42, 491486), (84, 245743), (397, 51996), (619, 33348), (794, 25998), (1191, 17332), (1238, 16674), (1588, 12999), (1857, 11116), (2382, 8666), (2476, 8337), (2779, 7428), (3714, 5558), (4333, 4764)]