21151668

素因数分解:

$2^2\times 3^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 50610560

約数和(自身を除く): 29458892

約数列:

[1, 2, 3, 4, 6, 12, 103, 109, 157, 206, 218, 309, 314, 327, 412, 436, 471, 618, 628, 654, 942, 1236, 1308, 1884, 11227, 16171, 17113, 22454, 32342, 33681, 34226, 44908, 48513, 51339, 64684, 67362, 68452, 97026, 102678, 134724, 194052, 205356, 1762639, 3525278, 5287917, 7050556, 10575834, 21151668]

約数ペア:

[(1, 21151668), (2, 10575834), (3, 7050556), (4, 5287917), (6, 3525278), (12, 1762639), (103, 205356), (109, 194052), (157, 134724), (206, 102678), (218, 97026), (309, 68452), (314, 67362), (327, 64684), (412, 51339), (436, 48513), (471, 44908), (618, 34226), (628, 33681), (654, 32342), (942, 22454), (1236, 17113), (1308, 16171), (1884, 11227)]