18202280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5113}}^1$

素因数の和:5213

約数の個数: 32

約数和(自身を含む): 41423400

約数和(自身を除く): 23221120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5113, 10226, 20452, 25565, 40904, 51130, 102260, 204520, 455057, 910114, 1820228, 2275285, 3640456, 4550570, 9101140, 18202280]

約数ペア:

[(1, 18202280), (2, 9101140), (4, 4550570), (5, 3640456), (8, 2275285), (10, 1820228), (20, 910114), (40, 455057), (89, 204520), (178, 102260), (356, 51130), (445, 40904), (712, 25565), (890, 20452), (1780, 10226), (3560, 5113)]