289052920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{555871}}^1$

素因数の和:555895

約数の個数: 32

約数和(自身を含む): 700398720

約数和(自身を除く): 411345800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 555871, 1111742, 2223484, 2779355, 4446968, 5558710, 7226323, 11117420, 14452646, 22234840, 28905292, 36131615, 57810584, 72263230, 144526460, 289052920]

約数ペア:

[(1, 289052920), (2, 144526460), (4, 72263230), (5, 57810584), (8, 36131615), (10, 28905292), (13, 22234840), (20, 14452646), (26, 11117420), (40, 7226323), (52, 5558710), (65, 4446968), (104, 2779355), (130, 2223484), (260, 1111742), (520, 555871)]