18429880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9403}}^1$

素因数の和:9428

約数の個数: 48

約数和(自身を含む): 48242520

約数和(自身を除く): 29812640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9403, 18806, 37612, 47015, 65821, 75224, 94030, 131642, 188060, 263284, 329105, 376120, 460747, 526568, 658210, 921494, 1316420, 1842988, 2303735, 2632840, 3685976, 4607470, 9214940, 18429880]

約数ペア:

[(1, 18429880), (2, 9214940), (4, 4607470), (5, 3685976), (7, 2632840), (8, 2303735), (10, 1842988), (14, 1316420), (20, 921494), (28, 658210), (35, 526568), (40, 460747), (49, 376120), (56, 329105), (70, 263284), (98, 188060), (140, 131642), (196, 94030), (245, 75224), (280, 65821), (392, 47015), (490, 37612), (980, 18806), (1960, 9403)]