18278720

素因数分解:

$2^6\times 5^1\times {\mathrm{239}}^2$

素因数の和:495

約数の個数: 42

約数和(自身を含む): 43709082

約数和(自身を除く): 25430362

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 239, 320, 478, 956, 1195, 1912, 2390, 3824, 4780, 7648, 9560, 15296, 19120, 38240, 57121, 76480, 114242, 228484, 285605, 456968, 571210, 913936, 1142420, 1827872, 2284840, 3655744, 4569680, 9139360, 18278720]

約数ペア:

[(1, 18278720), (2, 9139360), (4, 4569680), (5, 3655744), (8, 2284840), (10, 1827872), (16, 1142420), (20, 913936), (32, 571210), (40, 456968), (64, 285605), (80, 228484), (160, 114242), (239, 76480), (320, 57121), (478, 38240), (956, 19120), (1195, 15296), (1912, 9560), (2390, 7648), (3824, 4780)]