21741795

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{431}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 18693405

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 59, 95, 171, 177, 285, 295, 431, 531, 855, 885, 1121, 1293, 2155, 2655, 3363, 3879, 5605, 6465, 8189, 10089, 16815, 19395, 24567, 25429, 40945, 50445, 73701, 76287, 122835, 127145, 228861, 368505, 381435, 483151, 1144305, 1449453, 2415755, 4348359, 7247265, 21741795]

約数ペア:

[(1, 21741795), (3, 7247265), (5, 4348359), (9, 2415755), (15, 1449453), (19, 1144305), (45, 483151), (57, 381435), (59, 368505), (95, 228861), (171, 127145), (177, 122835), (285, 76287), (295, 73701), (431, 50445), (531, 40945), (855, 25429), (885, 24567), (1121, 19395), (1293, 16815), (2155, 10089), (2655, 8189), (3363, 6465), (3879, 5605)]