21987331380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17450263}}^1$

素因数の和:17450285

約数の個数: 72

約数和(自身を含む): 76222753152

約数和(自身を除く): 54235421772

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17450263, 34900526, 52350789, 69801052, 87251315, 104701578, 122151841, 157052367, 174502630, 209403156, 244303682, 261753945, 314104734, 349005260, 366455523, 488607364, 523507890, 610759205, 628209468, 732911046, 785261835, 1047015780, 1099366569, 1221518410, 1465822092, 1570523670, 1832277615, 2198733138, 2443036820, 3141047340, 3664555230, 4397466276, 5496832845, 7329110460, 10993665690, 21987331380]

約数ペア:

[(1, 21987331380), (2, 10993665690), (3, 7329110460), (4, 5496832845), (5, 4397466276), (6, 3664555230), (7, 3141047340), (9, 2443036820), (10, 2198733138), (12, 1832277615), (14, 1570523670), (15, 1465822092), (18, 1221518410), (20, 1099366569), (21, 1047015780), (28, 785261835), (30, 732911046), (35, 628209468), (36, 610759205), (42, 523507890), (45, 488607364), (60, 366455523), (63, 349005260), (70, 314104734), (84, 261753945), (90, 244303682), (105, 209403156), (126, 174502630), (140, 157052367), (180, 122151841), (210, 104701578), (252, 87251315), (315, 69801052), (420, 52350789), (630, 34900526), (1260, 17450263)]