81121170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208003}}^1$

素因数の和:208026

約数の個数: 32

約数和(自身を含む): 209668032

約数和(自身を除く): 128546862

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208003, 416006, 624009, 1040015, 1248018, 2080030, 2704039, 3120045, 5408078, 6240090, 8112117, 13520195, 16224234, 27040390, 40560585, 81121170]

約数ペア:

[(1, 81121170), (2, 40560585), (3, 27040390), (5, 16224234), (6, 13520195), (10, 8112117), (13, 6240090), (15, 5408078), (26, 3120045), (30, 2704039), (39, 2080030), (65, 1248018), (78, 1040015), (130, 624009), (195, 416006), (390, 208003)]