18879705

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 35904960

約数和(自身を除く): 17025255

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 59, 65, 117, 177, 195, 295, 531, 547, 585, 767, 885, 1641, 2301, 2655, 2735, 3835, 4923, 6903, 7111, 8205, 11505, 21333, 24615, 32273, 34515, 35555, 63999, 96819, 106665, 161365, 290457, 319995, 419549, 484095, 1258647, 1452285, 2097745, 3775941, 6293235, 18879705]

約数ペア:

[(1, 18879705), (3, 6293235), (5, 3775941), (9, 2097745), (13, 1452285), (15, 1258647), (39, 484095), (45, 419549), (59, 319995), (65, 290457), (117, 161365), (177, 106665), (195, 96819), (295, 63999), (531, 35555), (547, 34515), (585, 32273), (767, 24615), (885, 21333), (1641, 11505), (2301, 8205), (2655, 7111), (2735, 6903), (3835, 4923)]