16554890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^2$

素因数の和:215

約数の個数: 48

約数和(自身を含む): 34607520

約数和(自身を除く): 18052630

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 89, 95, 110, 178, 190, 209, 418, 445, 890, 979, 1045, 1691, 1958, 2090, 3382, 4895, 7921, 8455, 9790, 15842, 16910, 18601, 37202, 39605, 79210, 87131, 93005, 150499, 174262, 186010, 300998, 435655, 752495, 871310, 1504990, 1655489, 3310978, 8277445, 16554890]

約数ペア:

[(1, 16554890), (2, 8277445), (5, 3310978), (10, 1655489), (11, 1504990), (19, 871310), (22, 752495), (38, 435655), (55, 300998), (89, 186010), (95, 174262), (110, 150499), (178, 93005), (190, 87131), (209, 79210), (418, 39605), (445, 37202), (890, 18601), (979, 16910), (1045, 15842), (1691, 9790), (1958, 8455), (2090, 7921), (3382, 4895)]