80971840

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3203}}^1$

素因数の和:3299

約数の個数: 56

約数和(自身を含む): 195315840

約数和(自身を除く): 114344000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 3160, 3203, 5056, 6320, 6406, 12640, 12812, 16015, 25280, 25624, 32030, 51248, 64060, 102496, 128120, 204992, 253037, 256240, 506074, 512480, 1012148, 1024960, 1265185, 2024296, 2530370, 4048592, 5060740, 8097184, 10121480, 16194368, 20242960, 40485920, 80971840]

約数ペア:

[(1, 80971840), (2, 40485920), (4, 20242960), (5, 16194368), (8, 10121480), (10, 8097184), (16, 5060740), (20, 4048592), (32, 2530370), (40, 2024296), (64, 1265185), (79, 1024960), (80, 1012148), (158, 512480), (160, 506074), (316, 256240), (320, 253037), (395, 204992), (632, 128120), (790, 102496), (1264, 64060), (1580, 51248), (2528, 32030), (3160, 25624), (3203, 25280), (5056, 16015), (6320, 12812), (6406, 12640)]