17921890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{509}}^1$

素因数の和:1026

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 19091870

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 503, 509, 1006, 1018, 2515, 2545, 3521, 3563, 5030, 5090, 7042, 7126, 17605, 17815, 35210, 35630, 256027, 512054, 1280135, 1792189, 2560270, 3584378, 8960945, 17921890]

約数ペア:

[(1, 17921890), (2, 8960945), (5, 3584378), (7, 2560270), (10, 1792189), (14, 1280135), (35, 512054), (70, 256027), (503, 35630), (509, 35210), (1006, 17815), (1018, 17605), (2515, 7126), (2545, 7042), (3521, 5090), (3563, 5030)]