18628645

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 27244800

約数和(自身を除く): 8616155

約数列:

[1, 5, 7, 19, 35, 95, 109, 133, 257, 545, 665, 763, 1285, 1799, 2071, 3815, 4883, 8995, 10355, 14497, 24415, 28013, 34181, 72485, 140065, 170905, 196091, 532247, 980455, 2661235, 3725729, 18628645]

約数ペア:

[(1, 18628645), (5, 3725729), (7, 2661235), (19, 980455), (35, 532247), (95, 196091), (109, 170905), (133, 140065), (257, 72485), (545, 34181), (665, 28013), (763, 24415), (1285, 14497), (1799, 10355), (2071, 8995), (3815, 4883)]