127905560

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{4973}}^1$

素因数の和:5627

約数の個数: 32

約数和(自身を含む): 288293040

約数和(自身を除く): 160387480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 4973, 5144, 6430, 9946, 12860, 19892, 24865, 25720, 39784, 49730, 99460, 198920, 3197639, 6395278, 12790556, 15988195, 25581112, 31976390, 63952780, 127905560]

約数ペア:

[(1, 127905560), (2, 63952780), (4, 31976390), (5, 25581112), (8, 15988195), (10, 12790556), (20, 6395278), (40, 3197639), (643, 198920), (1286, 99460), (2572, 49730), (3215, 39784), (4973, 25720), (5144, 24865), (6430, 19892), (9946, 12860)]