18821890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2089}}^1$

素因数の和:2166

約数の個数: 32

約数和(自身を含む): 36566640

約数和(自身を除く): 17744750

約数列:

[1, 2, 5, 10, 17, 34, 53, 85, 106, 170, 265, 530, 901, 1802, 2089, 4178, 4505, 9010, 10445, 20890, 35513, 71026, 110717, 177565, 221434, 355130, 553585, 1107170, 1882189, 3764378, 9410945, 18821890]

約数ペア:

[(1, 18821890), (2, 9410945), (5, 3764378), (10, 1882189), (17, 1107170), (34, 553585), (53, 355130), (85, 221434), (106, 177565), (170, 110717), (265, 71026), (530, 35513), (901, 20890), (1802, 10445), (2089, 9010), (4178, 4505)]