388994020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{148471}}^1$

素因数の和:148611

約数の個数: 24

約数和(自身を含む): 823128768

約数和(自身を除く): 434134748

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 148471, 296942, 593884, 742355, 1484710, 2969420, 19449701, 38899402, 77798804, 97248505, 194497010, 388994020]

約数ペア:

[(1, 388994020), (2, 194497010), (4, 97248505), (5, 77798804), (10, 38899402), (20, 19449701), (131, 2969420), (262, 1484710), (524, 742355), (655, 593884), (1310, 296942), (2620, 148471)]