19813520

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4673}}^1$

素因数の和:4739

約数の個数: 40

約数和(自身を含む): 46945656

約数和(自身を除く): 27132136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4673, 9346, 18692, 23365, 37384, 46730, 74768, 93460, 186920, 247669, 373840, 495338, 990676, 1238345, 1981352, 2476690, 3962704, 4953380, 9906760, 19813520]

約数ペア:

[(1, 19813520), (2, 9906760), (4, 4953380), (5, 3962704), (8, 2476690), (10, 1981352), (16, 1238345), (20, 990676), (40, 495338), (53, 373840), (80, 247669), (106, 186920), (212, 93460), (265, 74768), (424, 46730), (530, 37384), (848, 23365), (1060, 18692), (2120, 9346), (4240, 4673)]