87901970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{4001}}^1$

素因数の和:4047

約数の個数: 32

約数和(自身を含む): 171445680

約数和(自身を除く): 83543710

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 2197, 4001, 4394, 8002, 10985, 20005, 21970, 40010, 52013, 104026, 260065, 520130, 676169, 1352338, 3380845, 6761690, 8790197, 17580394, 43950985, 87901970]

約数ペア:

[(1, 87901970), (2, 43950985), (5, 17580394), (10, 8790197), (13, 6761690), (26, 3380845), (65, 1352338), (130, 676169), (169, 520130), (338, 260065), (845, 104026), (1690, 52013), (2197, 40010), (4001, 21970), (4394, 20005), (8002, 10985)]