20919900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:663

約数の個数: 72

約数和(自身を含む): 61089840

約数和(自身を除く): 40169940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 137, 150, 274, 300, 411, 509, 548, 685, 822, 1018, 1370, 1527, 1644, 2036, 2055, 2545, 2740, 3054, 3425, 4110, 5090, 6108, 6850, 7635, 8220, 10180, 10275, 12725, 13700, 15270, 20550, 25450, 30540, 38175, 41100, 50900, 69733, 76350, 139466, 152700, 209199, 278932, 348665, 418398, 697330, 836796, 1045995, 1394660, 1743325, 2091990, 3486650, 4183980, 5229975, 6973300, 10459950, 20919900]

約数ペア:

[(1, 20919900), (2, 10459950), (3, 6973300), (4, 5229975), (5, 4183980), (6, 3486650), (10, 2091990), (12, 1743325), (15, 1394660), (20, 1045995), (25, 836796), (30, 697330), (50, 418398), (60, 348665), (75, 278932), (100, 209199), (137, 152700), (150, 139466), (274, 76350), (300, 69733), (411, 50900), (509, 41100), (548, 38175), (685, 30540), (822, 25450), (1018, 20550), (1370, 15270), (1527, 13700), (1644, 12725), (2036, 10275), (2055, 10180), (2545, 8220), (2740, 7635), (3054, 6850), (3425, 6108), (4110, 5090)]