71751640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1$

素因数の和:772

約数の個数: 64

約数和(自身を含む): 168104160

約数和(自身を除く): 96352520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 205, 268, 328, 335, 410, 536, 653, 670, 820, 1306, 1340, 1640, 2612, 2680, 2747, 3265, 5224, 5494, 6530, 10988, 13060, 13735, 21976, 26120, 26773, 27470, 43751, 53546, 54940, 87502, 107092, 109880, 133865, 175004, 214184, 218755, 267730, 350008, 437510, 535460, 875020, 1070920, 1750040, 1793791, 3587582, 7175164, 8968955, 14350328, 17937910, 35875820, 71751640]

約数ペア:

[(1, 71751640), (2, 35875820), (4, 17937910), (5, 14350328), (8, 8968955), (10, 7175164), (20, 3587582), (40, 1793791), (41, 1750040), (67, 1070920), (82, 875020), (134, 535460), (164, 437510), (205, 350008), (268, 267730), (328, 218755), (335, 214184), (410, 175004), (536, 133865), (653, 109880), (670, 107092), (820, 87502), (1306, 54940), (1340, 53546), (1640, 43751), (2612, 27470), (2680, 26773), (2747, 26120), (3265, 21976), (5224, 13735), (5494, 13060), (6530, 10988)]