19809808

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53831}}^1$

素因数の和:53862

約数の個数: 20

約数和(自身を含む): 40051008

約数和(自身を除く): 20241200

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 53831, 107662, 215324, 430648, 861296, 1238113, 2476226, 4952452, 9904904, 19809808]

約数ペア:

[(1, 19809808), (2, 9904904), (4, 4952452), (8, 2476226), (16, 1238113), (23, 861296), (46, 430648), (92, 215324), (184, 107662), (368, 53831)]