20010222

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 24962706

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 103, 129, 206, 251, 258, 309, 387, 502, 618, 753, 774, 927, 1506, 1854, 2259, 4429, 4518, 8858, 10793, 13287, 21586, 25853, 26574, 32379, 39861, 51706, 64758, 77559, 79722, 97137, 155118, 194274, 232677, 465354, 1111679, 2223358, 3335037, 6670074, 10005111, 20010222]

約数ペア:

[(1, 20010222), (2, 10005111), (3, 6670074), (6, 3335037), (9, 2223358), (18, 1111679), (43, 465354), (86, 232677), (103, 194274), (129, 155118), (206, 97137), (251, 79722), (258, 77559), (309, 64758), (387, 51706), (502, 39861), (618, 32379), (753, 26574), (774, 25853), (927, 21586), (1506, 13287), (1854, 10793), (2259, 8858), (4429, 4518)]