439660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 1058400

約数和(自身を除く): 618740

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 89, 95, 130, 178, 190, 247, 260, 356, 380, 445, 494, 890, 988, 1157, 1235, 1691, 1780, 2314, 2470, 3382, 4628, 4940, 5785, 6764, 8455, 11570, 16910, 21983, 23140, 33820, 43966, 87932, 109915, 219830, 439660]

約数ペア:

[(1, 439660), (2, 219830), (4, 109915), (5, 87932), (10, 43966), (13, 33820), (19, 23140), (20, 21983), (26, 16910), (38, 11570), (52, 8455), (65, 6764), (76, 5785), (89, 4940), (95, 4628), (130, 3382), (178, 2470), (190, 2314), (247, 1780), (260, 1691), (356, 1235), (380, 1157), (445, 988), (494, 890)]