215687031

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 362248704

約数和(自身を除く): 146561673

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 361, 399, 437, 483, 1083, 1237, 1311, 2527, 3059, 3711, 7581, 8303, 8659, 9177, 23503, 24909, 25977, 28451, 58121, 70509, 85353, 164521, 174363, 199157, 446557, 493563, 540569, 597471, 1339671, 1621707, 3125899, 3783983, 9377697, 10270811, 11351949, 30812433, 71895677, 215687031]

約数ペア:

[(1, 215687031), (3, 71895677), (7, 30812433), (19, 11351949), (21, 10270811), (23, 9377697), (57, 3783983), (69, 3125899), (133, 1621707), (161, 1339671), (361, 597471), (399, 540569), (437, 493563), (483, 446557), (1083, 199157), (1237, 174363), (1311, 164521), (2527, 85353), (3059, 70509), (3711, 58121), (7581, 28451), (8303, 25977), (8659, 24909), (9177, 23503)]