21008316

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{653}}^1$

素因数の和:1050

約数の個数: 48

約数和(自身を含む): 56254464

約数和(自身を除く): 35246148

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 383, 653, 766, 1149, 1306, 1532, 1959, 2298, 2612, 2681, 3918, 4571, 4596, 5362, 7836, 8043, 9142, 10724, 13713, 16086, 18284, 27426, 32172, 54852, 250099, 500198, 750297, 1000396, 1500594, 1750693, 3001188, 3501386, 5252079, 7002772, 10504158, 21008316]

約数ペア:

[(1, 21008316), (2, 10504158), (3, 7002772), (4, 5252079), (6, 3501386), (7, 3001188), (12, 1750693), (14, 1500594), (21, 1000396), (28, 750297), (42, 500198), (84, 250099), (383, 54852), (653, 32172), (766, 27426), (1149, 18284), (1306, 16086), (1532, 13713), (1959, 10724), (2298, 9142), (2612, 8043), (2681, 7836), (3918, 5362), (4571, 4596)]