20384350090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{394969}}^1$

素因数の和:395386

約数の個数: 32

約数和(自身を含む): 39613911120

約数和(自身を除く): 19229561030

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 397, 794, 1985, 3970, 5161, 10322, 25805, 51610, 394969, 789938, 1974845, 3949690, 5134597, 10269194, 25672985, 51345970, 156802693, 313605386, 784013465, 1568026930, 2038435009, 4076870018, 10192175045, 20384350090]

約数ペア:

[(1, 20384350090), (2, 10192175045), (5, 4076870018), (10, 2038435009), (13, 1568026930), (26, 784013465), (65, 313605386), (130, 156802693), (397, 51345970), (794, 25672985), (1985, 10269194), (3970, 5134597), (5161, 3949690), (10322, 1974845), (25805, 789938), (51610, 394969)]