51981040

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{983}}^1$

素因数の和:1657

約数の個数: 40

約数和(自身を含む): 121161888

約数和(自身を除く): 69180848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 983, 1322, 1966, 2644, 3305, 3932, 4915, 5288, 6610, 7864, 9830, 10576, 13220, 15728, 19660, 26440, 39320, 52880, 78640, 649763, 1299526, 2599052, 3248815, 5198104, 6497630, 10396208, 12995260, 25990520, 51981040]

約数ペア:

[(1, 51981040), (2, 25990520), (4, 12995260), (5, 10396208), (8, 6497630), (10, 5198104), (16, 3248815), (20, 2599052), (40, 1299526), (80, 649763), (661, 78640), (983, 52880), (1322, 39320), (1966, 26440), (2644, 19660), (3305, 15728), (3932, 13220), (4915, 10576), (5288, 9830), (6610, 7864)]