19811930

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1289}}^1$

素因数の和:1378

約数の個数: 32

約数和(自身を含む): 37616400

約数和(自身を除く): 17804470

約数列:

[1, 2, 5, 10, 29, 53, 58, 106, 145, 265, 290, 530, 1289, 1537, 2578, 3074, 6445, 7685, 12890, 15370, 37381, 68317, 74762, 136634, 186905, 341585, 373810, 683170, 1981193, 3962386, 9905965, 19811930]

約数ペア:

[(1, 19811930), (2, 9905965), (5, 3962386), (10, 1981193), (29, 683170), (53, 373810), (58, 341585), (106, 186905), (145, 136634), (265, 74762), (290, 68317), (530, 37381), (1289, 15370), (1537, 12890), (2578, 7685), (3074, 6445)]