20491806

素因数分解:

$2^1\times 3^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 44149248

約数和(自身を除く): 23657442

約数列:

[1, 2, 3, 6, 29, 31, 58, 62, 87, 93, 131, 174, 186, 262, 393, 786, 841, 899, 1682, 1798, 2523, 2697, 3799, 4061, 5046, 5394, 7598, 8122, 11397, 12183, 22794, 24366, 26071, 52142, 78213, 110171, 117769, 156426, 220342, 235538, 330513, 353307, 661026, 706614, 3415301, 6830602, 10245903, 20491806]

約数ペア:

[(1, 20491806), (2, 10245903), (3, 6830602), (6, 3415301), (29, 706614), (31, 661026), (58, 353307), (62, 330513), (87, 235538), (93, 220342), (131, 156426), (174, 117769), (186, 110171), (262, 78213), (393, 52142), (786, 26071), (841, 24366), (899, 22794), (1682, 12183), (1798, 11397), (2523, 8122), (2697, 7598), (3799, 5394), (4061, 5046)]