261940720

素因数分解:

$2^4\times 5^1\times {\mathrm{631}}^1\times {\mathrm{5189}}^1$

素因数の和:5833

約数の個数: 40

約数和(自身を含む): 610094880

約数和(自身を除く): 348154160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 631, 1262, 2524, 3155, 5048, 5189, 6310, 10096, 10378, 12620, 20756, 25240, 25945, 41512, 50480, 51890, 83024, 103780, 207560, 415120, 3274259, 6548518, 13097036, 16371295, 26194072, 32742590, 52388144, 65485180, 130970360, 261940720]

約数ペア:

[(1, 261940720), (2, 130970360), (4, 65485180), (5, 52388144), (8, 32742590), (10, 26194072), (16, 16371295), (20, 13097036), (40, 6548518), (80, 3274259), (631, 415120), (1262, 207560), (2524, 103780), (3155, 83024), (5048, 51890), (5189, 50480), (6310, 41512), (10096, 25945), (10378, 25240), (12620, 20756)]