19802556

素因数分解:

$2^2\times 3^6\times {\mathrm{6791}}^1$

素因数の和:6813

約数の個数: 42

約数和(自身を含む): 51965592

約数和(自身を除く): 32163036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 6791, 13582, 20373, 27164, 40746, 61119, 81492, 122238, 183357, 244476, 366714, 550071, 733428, 1100142, 1650213, 2200284, 3300426, 4950639, 6600852, 9901278, 19802556]

約数ペア:

[(1, 19802556), (2, 9901278), (3, 6600852), (4, 4950639), (6, 3300426), (9, 2200284), (12, 1650213), (18, 1100142), (27, 733428), (36, 550071), (54, 366714), (81, 244476), (108, 183357), (162, 122238), (243, 81492), (324, 61119), (486, 40746), (729, 27164), (972, 20373), (1458, 13582), (2916, 6791)]