80384980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{309173}}^1$

素因数の和:309195

約数の個数: 24

約数和(自身を含む): 181794312

約数和(自身を除く): 101409332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 309173, 618346, 1236692, 1545865, 3091730, 4019249, 6183460, 8038498, 16076996, 20096245, 40192490, 80384980]

約数ペア:

[(1, 80384980), (2, 40192490), (4, 20096245), (5, 16076996), (10, 8038498), (13, 6183460), (20, 4019249), (26, 3091730), (52, 1545865), (65, 1236692), (130, 618346), (260, 309173)]