21378170

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1783}}^1$

素因数の和:1910

約数の個数: 32

約数和(自身を含む): 42387840

約数和(自身を除く): 21009670

約数列:

[1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1090, 1199, 1783, 2398, 3566, 5995, 8915, 11990, 17830, 19613, 39226, 98065, 194347, 196130, 388694, 971735, 1943470, 2137817, 4275634, 10689085, 21378170]

約数ペア:

[(1, 21378170), (2, 10689085), (5, 4275634), (10, 2137817), (11, 1943470), (22, 971735), (55, 388694), (109, 196130), (110, 194347), (218, 98065), (545, 39226), (1090, 19613), (1199, 17830), (1783, 11990), (2398, 8915), (3566, 5995)]