208690820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{19577}}^1$

素因数の和:19640

約数の個数: 48

約数和(自身を含む): 483498288

約数和(自身を除く): 274807468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 2132, 2665, 5330, 10660, 19577, 39154, 78308, 97885, 195770, 254501, 391540, 509002, 802657, 1018004, 1272505, 1605314, 2545010, 3210628, 4013285, 5090020, 8026570, 10434541, 16053140, 20869082, 41738164, 52172705, 104345410, 208690820]

約数ペア:

[(1, 208690820), (2, 104345410), (4, 52172705), (5, 41738164), (10, 20869082), (13, 16053140), (20, 10434541), (26, 8026570), (41, 5090020), (52, 4013285), (65, 3210628), (82, 2545010), (130, 1605314), (164, 1272505), (205, 1018004), (260, 802657), (410, 509002), (533, 391540), (820, 254501), (1066, 195770), (2132, 97885), (2665, 78308), (5330, 39154), (10660, 19577)]