220129520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211663}}^1$

素因数の和:211689

約数の個数: 40

約数和(自身を含む): 551173056

約数和(自身を除く): 331043536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211663, 423326, 846652, 1058315, 1693304, 2116630, 2751619, 3386608, 4233260, 5503238, 8466520, 11006476, 13758095, 16933040, 22012952, 27516190, 44025904, 55032380, 110064760, 220129520]

約数ペア:

[(1, 220129520), (2, 110064760), (4, 55032380), (5, 44025904), (8, 27516190), (10, 22012952), (13, 16933040), (16, 13758095), (20, 11006476), (26, 8466520), (40, 5503238), (52, 4233260), (65, 3386608), (80, 2751619), (104, 2116630), (130, 1693304), (208, 1058315), (260, 846652), (520, 423326), (1040, 211663)]