7847970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20123}}^1$

素因数の和:20146

約数の個数: 32

約数和(自身を含む): 20284992

約数和(自身を除く): 12437022

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 20123, 40246, 60369, 100615, 120738, 201230, 261599, 301845, 523198, 603690, 784797, 1307995, 1569594, 2615990, 3923985, 7847970]

約数ペア:

[(1, 7847970), (2, 3923985), (3, 2615990), (5, 1569594), (6, 1307995), (10, 784797), (13, 603690), (15, 523198), (26, 301845), (30, 261599), (39, 201230), (65, 120738), (78, 100615), (130, 60369), (195, 40246), (390, 20123)]