18742700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 44059680

約数和(自身を除く): 25316980

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 29, 46, 50, 58, 92, 100, 115, 116, 145, 230, 281, 290, 460, 562, 575, 580, 667, 725, 1124, 1150, 1334, 1405, 1450, 2300, 2668, 2810, 2900, 3335, 5620, 6463, 6670, 7025, 8149, 12926, 13340, 14050, 16298, 16675, 25852, 28100, 32315, 32596, 33350, 40745, 64630, 66700, 81490, 129260, 161575, 162980, 187427, 203725, 323150, 374854, 407450, 646300, 749708, 814900, 937135, 1874270, 3748540, 4685675, 9371350, 18742700]

約数ペア:

[(1, 18742700), (2, 9371350), (4, 4685675), (5, 3748540), (10, 1874270), (20, 937135), (23, 814900), (25, 749708), (29, 646300), (46, 407450), (50, 374854), (58, 323150), (92, 203725), (100, 187427), (115, 162980), (116, 161575), (145, 129260), (230, 81490), (281, 66700), (290, 64630), (460, 40745), (562, 33350), (575, 32596), (580, 32315), (667, 28100), (725, 25852), (1124, 16675), (1150, 16298), (1334, 14050), (1405, 13340), (1450, 12926), (2300, 8149), (2668, 7025), (2810, 6670), (2900, 6463), (3335, 5620)]