25423880

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1601}}^1$

素因数の和:2009

約数の個数: 32

約数和(自身を含む): 57383640

約数和(自身を除く): 31959760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1601, 1985, 3176, 3202, 3970, 6404, 7940, 8005, 12808, 15880, 16010, 32020, 64040, 635597, 1271194, 2542388, 3177985, 5084776, 6355970, 12711940, 25423880]

約数ペア:

[(1, 25423880), (2, 12711940), (4, 6355970), (5, 5084776), (8, 3177985), (10, 2542388), (20, 1271194), (40, 635597), (397, 64040), (794, 32020), (1588, 16010), (1601, 15880), (1985, 12808), (3176, 8005), (3202, 7940), (3970, 6404)]