21168310

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 39019680

約数和(自身を除く): 17851370

約数列:

[1, 2, 5, 10, 97, 139, 157, 194, 278, 314, 485, 695, 785, 970, 1390, 1570, 13483, 15229, 21823, 26966, 30458, 43646, 67415, 76145, 109115, 134830, 152290, 218230, 2116831, 4233662, 10584155, 21168310]

約数ペア:

[(1, 21168310), (2, 10584155), (5, 4233662), (10, 2116831), (97, 218230), (139, 152290), (157, 134830), (194, 109115), (278, 76145), (314, 67415), (485, 43646), (695, 30458), (785, 26966), (970, 21823), (1390, 15229), (1570, 13483)]