19720452

素因数分解:

$2^2\times 3^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{307}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 47500992

約数和(自身を除く): 27780540

約数列:

[1, 2, 3, 4, 6, 12, 53, 101, 106, 159, 202, 212, 303, 307, 318, 404, 606, 614, 636, 921, 1212, 1228, 1842, 3684, 5353, 10706, 16059, 16271, 21412, 31007, 32118, 32542, 48813, 62014, 64236, 65084, 93021, 97626, 124028, 186042, 195252, 372084, 1643371, 3286742, 4930113, 6573484, 9860226, 19720452]

約数ペア:

[(1, 19720452), (2, 9860226), (3, 6573484), (4, 4930113), (6, 3286742), (12, 1643371), (53, 372084), (101, 195252), (106, 186042), (159, 124028), (202, 97626), (212, 93021), (303, 65084), (307, 64236), (318, 62014), (404, 48813), (606, 32542), (614, 32118), (636, 31007), (921, 21412), (1212, 16271), (1228, 16059), (1842, 10706), (3684, 5353)]