21555828

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28513}}^1$

素因数の和:28533

約数の個数: 48

約数和(自身を含む): 63871360

約数和(自身を除く): 42315532

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28513, 57026, 85539, 114052, 171078, 199591, 256617, 342156, 399182, 513234, 598773, 769851, 798364, 1026468, 1197546, 1539702, 1796319, 2395092, 3079404, 3592638, 5388957, 7185276, 10777914, 21555828]

約数ペア:

[(1, 21555828), (2, 10777914), (3, 7185276), (4, 5388957), (6, 3592638), (7, 3079404), (9, 2395092), (12, 1796319), (14, 1539702), (18, 1197546), (21, 1026468), (27, 798364), (28, 769851), (36, 598773), (42, 513234), (54, 399182), (63, 342156), (84, 256617), (108, 199591), (126, 171078), (189, 114052), (252, 85539), (378, 57026), (756, 28513)]