9902720

素因数分解:

$2^7\times 5^1\times {\mathrm{15473}}^1$

素因数の和:15492

約数の個数: 32

約数和(自身を含む): 23675220

約数和(自身を除く): 13772500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 15473, 30946, 61892, 77365, 123784, 154730, 247568, 309460, 495136, 618920, 990272, 1237840, 1980544, 2475680, 4951360, 9902720]

約数ペア:

[(1, 9902720), (2, 4951360), (4, 2475680), (5, 1980544), (8, 1237840), (10, 990272), (16, 618920), (20, 495136), (32, 309460), (40, 247568), (64, 154730), (80, 123784), (128, 77365), (160, 61892), (320, 30946), (640, 15473)]