25196920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89989}}^1$

素因数の和:90007

約数の個数: 32

約数和(自身を含む): 64792800

約数和(自身を除く): 39595880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 89989, 179978, 359956, 449945, 629923, 719912, 899890, 1259846, 1799780, 2519692, 3149615, 3599560, 5039384, 6299230, 12598460, 25196920]

約数ペア:

[(1, 25196920), (2, 12598460), (4, 6299230), (5, 5039384), (7, 3599560), (8, 3149615), (10, 2519692), (14, 1799780), (20, 1259846), (28, 899890), (35, 719912), (40, 629923), (56, 449945), (70, 359956), (140, 179978), (280, 89989)]