20341680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{647}}^1$

素因数の和:794

約数の個数: 80

約数和(自身を含む): 63638784

約数和(自身を除く): 43297104

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 647, 655, 786, 1048, 1294, 1310, 1572, 1941, 1965, 2096, 2588, 2620, 3144, 3235, 3882, 3930, 5176, 5240, 6288, 6470, 7764, 7860, 9705, 10352, 10480, 12940, 15528, 15720, 19410, 25880, 31056, 31440, 38820, 51760, 77640, 84757, 155280, 169514, 254271, 339028, 423785, 508542, 678056, 847570, 1017084, 1271355, 1356112, 1695140, 2034168, 2542710, 3390280, 4068336, 5085420, 6780560, 10170840, 20341680]

約数ペア:

[(1, 20341680), (2, 10170840), (3, 6780560), (4, 5085420), (5, 4068336), (6, 3390280), (8, 2542710), (10, 2034168), (12, 1695140), (15, 1356112), (16, 1271355), (20, 1017084), (24, 847570), (30, 678056), (40, 508542), (48, 423785), (60, 339028), (80, 254271), (120, 169514), (131, 155280), (240, 84757), (262, 77640), (393, 51760), (524, 38820), (647, 31440), (655, 31056), (786, 25880), (1048, 19410), (1294, 15720), (1310, 15528), (1572, 12940), (1941, 10480), (1965, 10352), (2096, 9705), (2588, 7860), (2620, 7764), (3144, 6470), (3235, 6288), (3882, 5240), (3930, 5176)]