71398460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509989}}^1$

素因数の和:510005

約数の個数: 24

約数和(自身を含む): 171356640

約数和(自身を除く): 99958180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509989, 1019978, 2039956, 2549945, 3569923, 5099890, 7139846, 10199780, 14279692, 17849615, 35699230, 71398460]

約数ペア:

[(1, 71398460), (2, 35699230), (4, 17849615), (5, 14279692), (7, 10199780), (10, 7139846), (14, 5099890), (20, 3569923), (28, 2549945), (35, 2039956), (70, 1019978), (140, 509989)]