21970294928

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72270707}}^1$

素因数の和:72270734

約数の個数: 20

約数和(自身を含む): 44807838960

約数和(自身を除く): 22837544032

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72270707, 144541414, 289082828, 578165656, 1156331312, 1373143433, 2746286866, 5492573732, 10985147464, 21970294928]

約数ペア:

[(1, 21970294928), (2, 10985147464), (4, 5492573732), (8, 2746286866), (16, 1373143433), (19, 1156331312), (38, 578165656), (76, 289082828), (152, 144541414), (304, 72270707)]