80001040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{383}}^1$

素因数の和:776

約数の個数: 80

約数和(自身を含む): 213700608

約数和(自身を除く): 133699568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 373, 383, 560, 746, 766, 1492, 1532, 1865, 1915, 2611, 2681, 2984, 3064, 3730, 3830, 5222, 5362, 5968, 6128, 7460, 7660, 10444, 10724, 13055, 13405, 14920, 15320, 20888, 21448, 26110, 26810, 29840, 30640, 41776, 42896, 52220, 53620, 104440, 107240, 142859, 208880, 214480, 285718, 571436, 714295, 1000013, 1142872, 1428590, 2000026, 2285744, 2857180, 4000052, 5000065, 5714360, 8000104, 10000130, 11428720, 16000208, 20000260, 40000520, 80001040]

約数ペア:

[(1, 80001040), (2, 40000520), (4, 20000260), (5, 16000208), (7, 11428720), (8, 10000130), (10, 8000104), (14, 5714360), (16, 5000065), (20, 4000052), (28, 2857180), (35, 2285744), (40, 2000026), (56, 1428590), (70, 1142872), (80, 1000013), (112, 714295), (140, 571436), (280, 285718), (373, 214480), (383, 208880), (560, 142859), (746, 107240), (766, 104440), (1492, 53620), (1532, 52220), (1865, 42896), (1915, 41776), (2611, 30640), (2681, 29840), (2984, 26810), (3064, 26110), (3730, 21448), (3830, 20888), (5222, 15320), (5362, 14920), (5968, 13405), (6128, 13055), (7460, 10724), (7660, 10444)]