81366720

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{647}}^1$

素因数の和:798

約数の個数: 112

約数和(自身を含む): 260713728

約数和(自身を除く): 179347008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 131, 160, 192, 240, 262, 320, 393, 480, 524, 647, 655, 786, 960, 1048, 1294, 1310, 1572, 1941, 1965, 2096, 2588, 2620, 3144, 3235, 3882, 3930, 4192, 5176, 5240, 6288, 6470, 7764, 7860, 8384, 9705, 10352, 10480, 12576, 12940, 15528, 15720, 19410, 20704, 20960, 25152, 25880, 31056, 31440, 38820, 41408, 41920, 51760, 62112, 62880, 77640, 84757, 103520, 124224, 125760, 155280, 169514, 207040, 254271, 310560, 339028, 423785, 508542, 621120, 678056, 847570, 1017084, 1271355, 1356112, 1695140, 2034168, 2542710, 2712224, 3390280, 4068336, 5085420, 5424448, 6780560, 8136672, 10170840, 13561120, 16273344, 20341680, 27122240, 40683360, 81366720]

約数ペア:

[(1, 81366720), (2, 40683360), (3, 27122240), (4, 20341680), (5, 16273344), (6, 13561120), (8, 10170840), (10, 8136672), (12, 6780560), (15, 5424448), (16, 5085420), (20, 4068336), (24, 3390280), (30, 2712224), (32, 2542710), (40, 2034168), (48, 1695140), (60, 1356112), (64, 1271355), (80, 1017084), (96, 847570), (120, 678056), (131, 621120), (160, 508542), (192, 423785), (240, 339028), (262, 310560), (320, 254271), (393, 207040), (480, 169514), (524, 155280), (647, 125760), (655, 124224), (786, 103520), (960, 84757), (1048, 77640), (1294, 62880), (1310, 62112), (1572, 51760), (1941, 41920), (1965, 41408), (2096, 38820), (2588, 31440), (2620, 31056), (3144, 25880), (3235, 25152), (3882, 20960), (3930, 20704), (4192, 19410), (5176, 15720), (5240, 15528), (6288, 12940), (6470, 12576), (7764, 10480), (7860, 10352), (8384, 9705)]