21911295

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 42983424

約数和(自身を除く): 21072129

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 43, 69, 105, 115, 129, 161, 211, 215, 301, 345, 483, 633, 645, 805, 903, 989, 1055, 1477, 1505, 2415, 2967, 3165, 4431, 4515, 4853, 4945, 6923, 7385, 9073, 14559, 14835, 20769, 22155, 24265, 27219, 33971, 34615, 45365, 63511, 72795, 101913, 103845, 136095, 169855, 190533, 208679, 317555, 509565, 626037, 952665, 1043395, 1460753, 3130185, 4382259, 7303765, 21911295]

約数ペア:

[(1, 21911295), (3, 7303765), (5, 4382259), (7, 3130185), (15, 1460753), (21, 1043395), (23, 952665), (35, 626037), (43, 509565), (69, 317555), (105, 208679), (115, 190533), (129, 169855), (161, 136095), (211, 103845), (215, 101913), (301, 72795), (345, 63511), (483, 45365), (633, 34615), (645, 33971), (805, 27219), (903, 24265), (989, 22155), (1055, 20769), (1477, 14835), (1505, 14559), (2415, 9073), (2967, 7385), (3165, 6923), (4431, 4945), (4515, 4853)]