81811520

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{36523}}^1$

素因数の和:36547

約数の個数: 56

約数和(自身を含む): 222650304

約数和(自身を除く): 140838784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 36523, 73046, 146092, 182615, 255661, 292184, 365230, 511322, 584368, 730460, 1022644, 1168736, 1278305, 1460920, 2045288, 2337472, 2556610, 2921840, 4090576, 5113220, 5843680, 8181152, 10226440, 11687360, 16362304, 20452880, 40905760, 81811520]

約数ペア:

[(1, 81811520), (2, 40905760), (4, 20452880), (5, 16362304), (7, 11687360), (8, 10226440), (10, 8181152), (14, 5843680), (16, 5113220), (20, 4090576), (28, 2921840), (32, 2556610), (35, 2337472), (40, 2045288), (56, 1460920), (64, 1278305), (70, 1168736), (80, 1022644), (112, 730460), (140, 584368), (160, 511322), (224, 365230), (280, 292184), (320, 255661), (448, 182615), (560, 146092), (1120, 73046), (2240, 36523)]