28660840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55117}}^1$

素因数の和:55141

約数の個数: 32

約数和(自身を含む): 69448680

約数和(自身を除く): 40787840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55117, 110234, 220468, 275585, 440936, 551170, 716521, 1102340, 1433042, 2204680, 2866084, 3582605, 5732168, 7165210, 14330420, 28660840]

約数ペア:

[(1, 28660840), (2, 14330420), (4, 7165210), (5, 5732168), (8, 3582605), (10, 2866084), (13, 2204680), (20, 1433042), (26, 1102340), (40, 716521), (52, 551170), (65, 440936), (104, 275585), (130, 220468), (260, 110234), (520, 55117)]