21289112

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{739}}^1$

素因数の和:1035

約数の個数: 32

約数和(自身を含む): 43201200

約数和(自身を除く): 21912088

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 277, 554, 739, 1108, 1478, 2216, 2956, 3601, 5912, 7202, 9607, 14404, 19214, 28808, 38428, 76856, 204703, 409406, 818812, 1637624, 2661139, 5322278, 10644556, 21289112]

約数ペア:

[(1, 21289112), (2, 10644556), (4, 5322278), (8, 2661139), (13, 1637624), (26, 818812), (52, 409406), (104, 204703), (277, 76856), (554, 38428), (739, 28808), (1108, 19214), (1478, 14404), (2216, 9607), (2956, 7202), (3601, 5912)]