21720324

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 52468416

約数和(自身を除く): 30748092

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 131, 164, 246, 262, 337, 393, 492, 524, 674, 786, 1011, 1348, 1572, 2022, 4044, 5371, 10742, 13817, 16113, 21484, 27634, 32226, 41451, 44147, 55268, 64452, 82902, 88294, 132441, 165804, 176588, 264882, 529764, 1810027, 3620054, 5430081, 7240108, 10860162, 21720324]

約数ペア:

[(1, 21720324), (2, 10860162), (3, 7240108), (4, 5430081), (6, 3620054), (12, 1810027), (41, 529764), (82, 264882), (123, 176588), (131, 165804), (164, 132441), (246, 88294), (262, 82902), (337, 64452), (393, 55268), (492, 44147), (524, 41451), (674, 32226), (786, 27634), (1011, 21484), (1348, 16113), (1572, 13817), (2022, 10742), (4044, 5371)]