21935043

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 36305808

約数和(自身を除く): 14370765

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 481, 563, 999, 1053, 1443, 1689, 2997, 4329, 5067, 7319, 12987, 15201, 20831, 21957, 38961, 45603, 62493, 65871, 187479, 197613, 270803, 562437, 592839, 812409, 1687311, 2437227, 7311681, 21935043]

約数ペア:

[(1, 21935043), (3, 7311681), (9, 2437227), (13, 1687311), (27, 812409), (37, 592839), (39, 562437), (81, 270803), (111, 197613), (117, 187479), (333, 65871), (351, 62493), (481, 45603), (563, 38961), (999, 21957), (1053, 20831), (1443, 15201), (1689, 12987), (2997, 7319), (4329, 5067)]