80205440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{17903}}^1$

素因数の和:17929

約数の個数: 64

約数和(自身を含む): 219144960

約数和(自身を除く): 138939520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 17903, 35806, 71612, 89515, 125321, 143224, 179030, 250642, 286448, 358060, 501284, 572896, 626605, 716120, 1002568, 1145792, 1253210, 1432240, 2005136, 2291584, 2506420, 2864480, 4010272, 5012840, 5728960, 8020544, 10025680, 11457920, 16041088, 20051360, 40102720, 80205440]

約数ペア:

[(1, 80205440), (2, 40102720), (4, 20051360), (5, 16041088), (7, 11457920), (8, 10025680), (10, 8020544), (14, 5728960), (16, 5012840), (20, 4010272), (28, 2864480), (32, 2506420), (35, 2291584), (40, 2005136), (56, 1432240), (64, 1253210), (70, 1145792), (80, 1002568), (112, 716120), (128, 626605), (140, 572896), (160, 501284), (224, 358060), (280, 286448), (320, 250642), (448, 179030), (560, 143224), (640, 125321), (896, 89515), (1120, 71612), (2240, 35806), (4480, 17903)]