1995457840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{4447}}^1$

素因数の和:4610

約数の個数: 80

約数和(自身を含む): 4765409280

約数和(自身を除く): 2769951440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 79, 80, 142, 158, 284, 316, 355, 395, 568, 632, 710, 790, 1136, 1264, 1420, 1580, 2840, 3160, 4447, 5609, 5680, 6320, 8894, 11218, 17788, 22235, 22436, 28045, 35576, 44470, 44872, 56090, 71152, 88940, 89744, 112180, 177880, 224360, 315737, 351313, 355760, 448720, 631474, 702626, 1262948, 1405252, 1578685, 1756565, 2525896, 2810504, 3157370, 3513130, 5051792, 5621008, 6314740, 7026260, 12629480, 14052520, 24943223, 25258960, 28105040, 49886446, 99772892, 124716115, 199545784, 249432230, 399091568, 498864460, 997728920, 1995457840]

約数ペア:

[(1, 1995457840), (2, 997728920), (4, 498864460), (5, 399091568), (8, 249432230), (10, 199545784), (16, 124716115), (20, 99772892), (40, 49886446), (71, 28105040), (79, 25258960), (80, 24943223), (142, 14052520), (158, 12629480), (284, 7026260), (316, 6314740), (355, 5621008), (395, 5051792), (568, 3513130), (632, 3157370), (710, 2810504), (790, 2525896), (1136, 1756565), (1264, 1578685), (1420, 1405252), (1580, 1262948), (2840, 702626), (3160, 631474), (4447, 448720), (5609, 355760), (5680, 351313), (6320, 315737), (8894, 224360), (11218, 177880), (17788, 112180), (22235, 89744), (22436, 88940), (28045, 71152), (35576, 56090), (44470, 44872)]