393988720

素因数分解:

$2^4\times 5^1\times {\mathrm{1879}}^1\times {\mathrm{2621}}^1$

素因数の和:4513

約数の個数: 40

約数和(自身を含む): 916860960

約数和(自身を除く): 522872240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1879, 2621, 3758, 5242, 7516, 9395, 10484, 13105, 15032, 18790, 20968, 26210, 30064, 37580, 41936, 52420, 75160, 104840, 150320, 209680, 4924859, 9849718, 19699436, 24624295, 39398872, 49248590, 78797744, 98497180, 196994360, 393988720]

約数ペア:

[(1, 393988720), (2, 196994360), (4, 98497180), (5, 78797744), (8, 49248590), (10, 39398872), (16, 24624295), (20, 19699436), (40, 9849718), (80, 4924859), (1879, 209680), (2621, 150320), (3758, 104840), (5242, 75160), (7516, 52420), (9395, 41936), (10484, 37580), (13105, 30064), (15032, 26210), (18790, 20968)]