21264237

素因数分解:

$3^2\times {\mathrm{101}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 31426200

約数和(自身を除く): 10161963

約数列:

[1, 3, 9, 101, 149, 157, 303, 447, 471, 909, 1341, 1413, 15049, 15857, 23393, 45147, 47571, 70179, 135441, 142713, 210537, 2362693, 7088079, 21264237]

約数ペア:

[(1, 21264237), (3, 7088079), (9, 2362693), (101, 210537), (149, 142713), (157, 135441), (303, 70179), (447, 47571), (471, 45147), (909, 23393), (1341, 15857), (1413, 15049)]