251885440

素因数分解:

$2^7\times 5^1\times {\mathrm{393571}}^1$

素因数の和:393590

約数の個数: 32

約数和(自身を含む): 602165160

約数和(自身を除く): 350279720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 393571, 787142, 1574284, 1967855, 3148568, 3935710, 6297136, 7871420, 12594272, 15742840, 25188544, 31485680, 50377088, 62971360, 125942720, 251885440]

約数ペア:

[(1, 251885440), (2, 125942720), (4, 62971360), (5, 50377088), (8, 31485680), (10, 25188544), (16, 15742840), (20, 12594272), (32, 7871420), (40, 6297136), (64, 3935710), (80, 3148568), (128, 1967855), (160, 1574284), (320, 787142), (640, 393571)]