80378140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 176047200

約数和(自身を除く): 95669060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 997, 1390, 1994, 2780, 3988, 4031, 4985, 8062, 9970, 16124, 19940, 20155, 28913, 40310, 57826, 80620, 115652, 138583, 144565, 277166, 289130, 554332, 578260, 692915, 1385830, 2771660, 4018907, 8037814, 16075628, 20094535, 40189070, 80378140]

約数ペア:

[(1, 80378140), (2, 40189070), (4, 20094535), (5, 16075628), (10, 8037814), (20, 4018907), (29, 2771660), (58, 1385830), (116, 692915), (139, 578260), (145, 554332), (278, 289130), (290, 277166), (556, 144565), (580, 138583), (695, 115652), (997, 80620), (1390, 57826), (1994, 40310), (2780, 28913), (3988, 20155), (4031, 19940), (4985, 16124), (8062, 9970)]