21643180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83243}}^1$

素因数の和:83265

約数の個数: 24

約数和(自身を含む): 48947472

約数和(自身を除く): 27304292

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83243, 166486, 332972, 416215, 832430, 1082159, 1664860, 2164318, 4328636, 5410795, 10821590, 21643180]

約数ペア:

[(1, 21643180), (2, 10821590), (4, 5410795), (5, 4328636), (10, 2164318), (13, 1664860), (20, 1082159), (26, 832430), (52, 416215), (65, 332972), (130, 166486), (260, 83243)]