12640390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{503}}^1$

素因数の和:876

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 13486970

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 359, 503, 718, 1006, 1795, 2513, 2515, 3521, 3590, 5026, 5030, 7042, 12565, 17605, 25130, 35210, 180577, 361154, 902885, 1264039, 1805770, 2528078, 6320195, 12640390]

約数ペア:

[(1, 12640390), (2, 6320195), (5, 2528078), (7, 1805770), (10, 1264039), (14, 902885), (35, 361154), (70, 180577), (359, 35210), (503, 25130), (718, 17605), (1006, 12565), (1795, 7042), (2513, 5030), (2515, 5026), (3521, 3590)]