78689840

素因数分解:

$2^4\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1013}}^1$

素因数の和:1997

約数の個数: 40

約数和(自身を含む): 183323088

約数和(自身を除く): 104633248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 971, 1013, 1942, 2026, 3884, 4052, 4855, 5065, 7768, 8104, 9710, 10130, 15536, 16208, 19420, 20260, 38840, 40520, 77680, 81040, 983623, 1967246, 3934492, 4918115, 7868984, 9836230, 15737968, 19672460, 39344920, 78689840]

約数ペア:

[(1, 78689840), (2, 39344920), (4, 19672460), (5, 15737968), (8, 9836230), (10, 7868984), (16, 4918115), (20, 3934492), (40, 1967246), (80, 983623), (971, 81040), (1013, 77680), (1942, 40520), (2026, 38840), (3884, 20260), (4052, 19420), (4855, 16208), (5065, 15536), (7768, 10130), (8104, 9710)]