21881490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10273}}^1$

素因数の和:10354

約数の個数: 32

約数和(自身を含む): 53260416

約数和(自身を除く): 31378926

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 10273, 20546, 30819, 51365, 61638, 102730, 154095, 308190, 729383, 1458766, 2188149, 3646915, 4376298, 7293830, 10940745, 21881490]

約数ペア:

[(1, 21881490), (2, 10940745), (3, 7293830), (5, 4376298), (6, 3646915), (10, 2188149), (15, 1458766), (30, 729383), (71, 308190), (142, 154095), (213, 102730), (355, 61638), (426, 51365), (710, 30819), (1065, 20546), (2130, 10273)]