21190788

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^1\times {\mathrm{5303}}^1$

素因数の和:5353

約数の個数: 48

約数和(自身を含む): 56434560

約数和(自身を除く): 35243772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 108, 111, 148, 222, 333, 444, 666, 999, 1332, 1998, 3996, 5303, 10606, 15909, 21212, 31818, 47727, 63636, 95454, 143181, 190908, 196211, 286362, 392422, 572724, 588633, 784844, 1177266, 1765899, 2354532, 3531798, 5297697, 7063596, 10595394, 21190788]

約数ペア:

[(1, 21190788), (2, 10595394), (3, 7063596), (4, 5297697), (6, 3531798), (9, 2354532), (12, 1765899), (18, 1177266), (27, 784844), (36, 588633), (37, 572724), (54, 392422), (74, 286362), (108, 196211), (111, 190908), (148, 143181), (222, 95454), (333, 63636), (444, 47727), (666, 31818), (999, 21212), (1332, 15909), (1998, 10606), (3996, 5303)]