261944020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{19009}}^1$

素因数の和:19084

約数の個数: 48

約数和(自身を含む): 603605520

約数和(自身を除く): 341661500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2756, 3445, 6890, 13780, 19009, 38018, 76036, 95045, 190090, 247117, 380180, 494234, 988468, 1007477, 1235585, 2014954, 2471170, 4029908, 4942340, 5037385, 10074770, 13097201, 20149540, 26194402, 52388804, 65486005, 130972010, 261944020]

約数ペア:

[(1, 261944020), (2, 130972010), (4, 65486005), (5, 52388804), (10, 26194402), (13, 20149540), (20, 13097201), (26, 10074770), (52, 5037385), (53, 4942340), (65, 4029908), (106, 2471170), (130, 2014954), (212, 1235585), (260, 1007477), (265, 988468), (530, 494234), (689, 380180), (1060, 247117), (1378, 190090), (2756, 95045), (3445, 76036), (6890, 38018), (13780, 19009)]