1390375040

素因数分解:

$2^7\times 5^1\times {\mathrm{2172461}}^1$

素因数の和:2172480

約数の個数: 32

約数和(自身を含む): 3323866860

約数和(自身を除く): 1933491820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 2172461, 4344922, 8689844, 10862305, 17379688, 21724610, 34759376, 43449220, 69518752, 86898440, 139037504, 173796880, 278075008, 347593760, 695187520, 1390375040]

約数ペア:

[(1, 1390375040), (2, 695187520), (4, 347593760), (5, 278075008), (8, 173796880), (10, 139037504), (16, 86898440), (20, 69518752), (32, 43449220), (40, 34759376), (64, 21724610), (80, 17379688), (128, 10862305), (160, 8689844), (320, 4344922), (640, 2172461)]