21338340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5009}}^1$

素因数の和:5092

約数の個数: 48

約数和(自身を含む): 60600960

約数和(自身を除く): 39262620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5009, 10018, 15027, 20036, 25045, 30054, 50090, 60108, 75135, 100180, 150270, 300540, 355639, 711278, 1066917, 1422556, 1778195, 2133834, 3556390, 4267668, 5334585, 7112780, 10669170, 21338340]

約数ペア:

[(1, 21338340), (2, 10669170), (3, 7112780), (4, 5334585), (5, 4267668), (6, 3556390), (10, 2133834), (12, 1778195), (15, 1422556), (20, 1066917), (30, 711278), (60, 355639), (71, 300540), (142, 150270), (213, 100180), (284, 75135), (355, 60108), (426, 50090), (710, 30054), (852, 25045), (1065, 20036), (1420, 15027), (2130, 10018), (4260, 5009)]