161777889940

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3701}}^1\times {\mathrm{13921}}^1$

素因数の和:17788

約数の個数: 48

約数和(自身を含む): 342014423184

約数和(自身を除く): 180236533244

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 3701, 7402, 13921, 14804, 18505, 27842, 37010, 55684, 69605, 74020, 139210, 278420, 581057, 1162114, 2185597, 2324228, 2905285, 4371194, 5810570, 8742388, 10927985, 11621140, 21855970, 43711940, 51521621, 103043242, 206086484, 257608105, 515216210, 1030432420, 8088894497, 16177788994, 32355577988, 40444472485, 80888944970, 161777889940]

約数ペア:

[(1, 161777889940), (2, 80888944970), (4, 40444472485), (5, 32355577988), (10, 16177788994), (20, 8088894497), (157, 1030432420), (314, 515216210), (628, 257608105), (785, 206086484), (1570, 103043242), (3140, 51521621), (3701, 43711940), (7402, 21855970), (13921, 11621140), (14804, 10927985), (18505, 8742388), (27842, 5810570), (37010, 4371194), (55684, 2905285), (69605, 2324228), (74020, 2185597), (139210, 1162114), (278420, 581057)]