78608920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151171}}^1$

素因数の和:151195

約数の個数: 32

約数和(自身を含む): 190476720

約数和(自身を除く): 111867800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 151171, 302342, 604684, 755855, 1209368, 1511710, 1965223, 3023420, 3930446, 6046840, 7860892, 9826115, 15721784, 19652230, 39304460, 78608920]

約数ペア:

[(1, 78608920), (2, 39304460), (4, 19652230), (5, 15721784), (8, 9826115), (10, 7860892), (13, 6046840), (20, 3930446), (26, 3023420), (40, 1965223), (52, 1511710), (65, 1209368), (104, 755855), (130, 604684), (260, 302342), (520, 151171)]