72802000

素因数分解:

$2^4\times 5^3\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:521

約数の個数: 80

約数和(自身を含む): 178448400

約数和(自身を除く): 105646400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 125, 178, 200, 250, 356, 400, 409, 445, 500, 712, 818, 890, 1000, 1424, 1636, 1780, 2000, 2045, 2225, 3272, 3560, 4090, 4450, 6544, 7120, 8180, 8900, 10225, 11125, 16360, 17800, 20450, 22250, 32720, 35600, 36401, 40900, 44500, 51125, 72802, 81800, 89000, 102250, 145604, 163600, 178000, 182005, 204500, 291208, 364010, 409000, 582416, 728020, 818000, 910025, 1456040, 1820050, 2912080, 3640100, 4550125, 7280200, 9100250, 14560400, 18200500, 36401000, 72802000]

約数ペア:

[(1, 72802000), (2, 36401000), (4, 18200500), (5, 14560400), (8, 9100250), (10, 7280200), (16, 4550125), (20, 3640100), (25, 2912080), (40, 1820050), (50, 1456040), (80, 910025), (89, 818000), (100, 728020), (125, 582416), (178, 409000), (200, 364010), (250, 291208), (356, 204500), (400, 182005), (409, 178000), (445, 163600), (500, 145604), (712, 102250), (818, 89000), (890, 81800), (1000, 72802), (1424, 51125), (1636, 44500), (1780, 40900), (2000, 36401), (2045, 35600), (2225, 32720), (3272, 22250), (3560, 20450), (4090, 17800), (4450, 16360), (6544, 11125), (7120, 10225), (8180, 8900)]